Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. Synthetic resins are commonly used as cements. A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste.
Polymerized methyl methacrylate monomers which are used as sheets, moulding, extrusion powders, surface coating resins, emulsion polymers, fibers, inks, and films (From International Labor Organization, 1983). This material is also used in tooth implants, bone cements, and hard corneal contact lenses.
A specialized CONNECTIVE TISSUE that is the main constituent of the SKELETON. The principle cellular component of bone is comprised of OSTEOBLASTS; OSTEOCYTES; and OSTEOCLASTS, while FIBRILLAR COLLAGENS and hydroxyapatite crystals form the BONE MATRIX.
Substances used to bond COMPOSITE RESINS to DENTAL ENAMEL and DENTIN. These bonding or luting agents are used in restorative dentistry, ROOT CANAL THERAPY; PROSTHODONTICS; and ORTHODONTICS.
The methyl esters of methacrylic acid that polymerize easily and are used as tissue cements, dental materials, and absorbent for biological substances.
Dental cements composed either of polymethyl methacrylate or dimethacrylate, produced by mixing an acrylic monomer liquid with acrylic polymers and mineral fillers. The cement is insoluble in water and is thus resistant to fluids in the mouth, but is also irritating to the dental pulp. It is used chiefly as a luting agent for fabricated and temporary restorations. (Jablonski's Dictionary of Dentistry, 1992, p159)
Procedures to repair or stabilize vertebral fractures, especially compression fractures accomplished by injecting BONE CEMENTS into the fractured VERTEBRAE.
A polymer obtained by reacting polyacrylic acid with a special anion-leachable glass (alumino-silicate). The resulting cement is more durable and tougher than others in that the materials comprising the polymer backbone do not leach out.
The maximum compression a material can withstand without failure. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p427)
The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.
The continuous turnover of BONE MATRIX and mineral that involves first an increase in BONE RESORPTION (osteoclastic activity) and later, reactive BONE FORMATION (osteoblastic activity). The process of bone remodeling takes place in the adult skeleton at discrete foci. The process ensures the mechanical integrity of the skeleton throughout life and plays an important role in calcium HOMEOSTASIS. An imbalance in the regulation of bone remodeling's two contrasting events, bone resorption and bone formation, results in many of the metabolic bone diseases, such as OSTEOPOROSIS.
A relatively hard, translucent, restorative material used primarily in anterior teeth. (From Boucher's Clinical Dental Terminology, 4th ed, p50)
The methyl ester of methacrylic acid. It polymerizes easily to form POLYMETHYL METHACRYLATE. It is used as a bone cement.
Water-soluble low-molecular-weight polymers of acrylic or methacrylic acid that form solid, insoluble products when mixed with specially prepared ZnO powder. The resulting cement adheres to dental enamel and is also used as a luting agent.
The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS.
Bone loss due to osteoclastic activity.
The joining of objects by means of a cement (e.g., in fracture fixation, such as in hip arthroplasty for joining of the acetabular component to the femoral component). In dentistry, it is used for the process of attaching parts of a tooth or restorative material to a natural tooth or for the attaching of orthodontic bands to teeth by means of an adhesive.
Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)
A compound used as an x-ray contrast medium that occurs in nature as the mineral barite. It is also used in various manufacturing applications and mixed into heavy concrete to serve as a radiation shield.
The maximum stress a material subjected to a stretching load can withstand without tearing. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed, p2001)
Tumors or cancer located in bone tissue or specific BONES.
Crumbling or smashing of cancellous BONE by forces acting parallel to the long axis of bone. It is applied particularly to vertebral body fractures (SPINAL FRACTURES). (Blauvelt and Nelson, A Manual of Orthopedic Terminology, 1994, p4)
The soft tissue filling the cavities of bones. Bone marrow exists in two types, yellow and red. Yellow marrow is found in the large cavities of large bones and consists mostly of fat cells and a few primitive blood cells. Red marrow is a hematopoietic tissue and is the site of production of erythrocytes and granular leukocytes. Bone marrow is made up of a framework of connective tissue containing branching fibers with the frame being filled with marrow cells.
Calcium salts of phosphoric acid. These compounds are frequently used as calcium supplements.
Broken bones in the vertebral column.
Condition of having pores or open spaces. This often refers to bones, bone implants, or bone cements, but can refer to the porous state of any solid substance.
A complex of closely related aminoglycosides obtained from MICROMONOSPORA purpurea and related species. They are broad-spectrum antibiotics, but may cause ear and kidney damage. They act to inhibit PROTEIN BIOSYNTHESIS.
Synthetic or natural materials for the replacement of bones or bone tissue. They include hard tissue replacement polymers, natural coral, hydroxyapatite, beta-tricalcium phosphate, and various other biomaterials. The bone substitutes as inert materials can be incorporated into surrounding tissue or gradually replaced by original tissue.
The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.
Used as a dental cement this is mainly zinc oxide (with strengtheners and accelerators) and eugenol. (Boucher's Clinical Dental Terminology, 4th ed, p50)
The growth and development of bones from fetus to adult. It includes two principal mechanisms of bone growth: growth in length of long bones at the epiphyseal cartilages and growth in thickness by depositing new bone (OSTEOGENESIS) with the actions of OSTEOBLASTS and OSTEOCLASTS.
Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells.
SURFACE-ACTIVE AGENTS that induce a dispersion of undissolved material throughout a liquid.
The longest and largest bone of the skeleton, it is situated between the hip and the knee.
Diseases of BONES.
Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.
A property of the surface of an object that makes it stick to another surface.
Replacement for a hip joint.
Nonexpendable items used in the performance of orthopedic surgery and related therapy. They are differentiated from ORTHOTIC DEVICES, apparatus used to prevent or correct deformities in patients.
Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).
Renewal or repair of lost bone tissue. It excludes BONY CALLUS formed after BONE FRACTURES but not yet replaced by hard bone.
Procedures to restore vertebrae to their original shape following vertebral compression fractures by inflating a balloon inserted into the vertebrae, followed by removal of the balloon and injection of BONE CEMENTS to fill the cavity.
Supplies used in building.
Microscopy in which the object is examined directly by an electron beam scanning the specimen point-by-point. The image is constructed by detecting the products of specimen interactions that are projected above the plane of the sample, such as backscattered electrons. Although SCANNING TRANSMISSION ELECTRON MICROSCOPY also scans the specimen point by point with the electron beam, the image is constructed by detecting the electrons, or their interaction products that are transmitted through the sample plane, so that is a form of TRANSMISSION ELECTRON MICROSCOPY.
Replacement of the hip joint.
A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.
Chemical reaction in which monomeric components are combined to form POLYMERS (e.g., POLYMETHYLMETHACRYLATE).
The grafting of bone from a donor site to a recipient site.
An adhesion procedure for orthodontic attachments, such as plastic DENTAL CROWNS. This process usually includes the application of an adhesive material (DENTAL CEMENTS) and letting it harden in-place by light or chemical curing.
Prostheses used to partially or totally replace a human or animal joint. (from UMDNS, 1999)
The administration of medication by insertion of a tiny needle or catheter into the spinal sac or epidural cavity.
The growth action of bone tissue as it assimilates surgically implanted devices or prostheses to be used as either replacement parts (e.g., hip) or as anchors (e.g., endosseous dental implants).
Characteristics or attributes of the outer boundaries of objects, including molecules.
Extracellular substance of bone tissue consisting of COLLAGEN fibers, ground substance, and inorganic crystalline minerals and salts.
The second longest bone of the skeleton. It is located on the medial side of the lower leg, articulating with the FIBULA laterally, the TALUS distally, and the FEMUR proximally.
An aminoglycoside, broad-spectrum antibiotic produced by Streptomyces tenebrarius. It is effective against gram-negative bacteria, especially the PSEUDOMONAS species. It is a 10% component of the antibiotic complex, NEBRAMYCIN, produced by the same species.
The transference of BONE MARROW from one human or animal to another for a variety of purposes including HEMATOPOIETIC STEM CELL TRANSPLANTATION or MESENCHYMAL STEM CELL TRANSPLANTATION.
Substances that reduce the growth or reproduction of BACTERIA.
The hardening or polymerization of bonding agents (DENTAL CEMENTS) via chemical reactions, usually involving two components. This type of dental bonding uses a self-cure or dual-cure system.
The spinal or vertebral column.
Inorganic compounds that contain calcium as an integral part of the molecule.
Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.
The generic term for salts derived from silica or the silicic acids. They contain silicon, oxygen, and one or more metals, and may contain hydrogen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th Ed)
Bone-forming cells which secrete an EXTRACELLULAR MATRIX. HYDROXYAPATITE crystals are then deposited into the matrix to form bone.
Reduction of bone mass without alteration in the composition of bone, leading to fractures. Primary osteoporosis can be of two major types: postmenopausal osteoporosis (OSTEOPOROSIS, POSTMENOPAUSAL) and age-related or senile osteoporosis.
A cellulose derivative which is a beta-(1,4)-D-glucopyranose polymer. It is used as a bulk laxative and as an emulsifier and thickener in cosmetics and pharmaceuticals and as a stabilizer for reagents.
Holding a DENTAL PROSTHESIS in place by its design, or by the use of additional devices or adhesives.
Magnesium oxide (MgO). An inorganic compound that occurs in nature as the mineral periclase. In aqueous media combines quickly with water to form magnesium hydroxide. It is used as an antacid and mild laxative and has many nonmedicinal uses.
A prosthesis or restoration placed for a limited period, from several days to several months, which is designed to seal the tooth and maintain its position until a permanent restoration (DENTAL RESTORATION, PERMANENT) will replace it. (From Jablonski, Dictionary of Dentistry, 1992)
The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures.
The properties, processes, and behavior of biological systems under the action of mechanical forces.
A computer based method of simulating or analyzing the behavior of structures or components.
Any of the numerous types of clay which contain varying proportions of Al2O3 and SiO2. They are made synthetically by heating aluminum fluoride at 1000-2000 degrees C with silica and water vapor. (From Hawley's Condensed Chemical Dictionary, 11th ed)
A scraping, usually of the interior of a cavity or tract, for removal of new growth or other abnormal tissue, or to obtain material for tissue diagnosis. It is performed with a curet (curette), a spoon-shaped instrument designed for that purpose. (From Stedman, 25th ed & Dorland, 27th ed)
A dark-gray, metallic element of widespread distribution but occurring in small amounts; atomic number, 22; atomic weight, 47.90; symbol, Ti; specific gravity, 4.5; used for fixation of fractures. (Dorland, 28th ed)
A dead body, usually a human body.
Poly-2-methylpropenoic acids. Used in the manufacture of methacrylate resins and plastics in the form of pellets and granules, as absorbent for biological materials and as filters; also as biological membranes and as hydrogens. Synonyms: methylacrylate polymer; poly(methylacrylate); acrylic acid methyl ester polymer.
Surgical reconstruction of a joint to relieve pain or restore motion.
Blocking of a blood vessel by fat deposits in the circulation. It is often seen after fractures of large bones or after administration of CORTICOSTEROIDS.
Breaks in bones.
The reaction product of bisphenol A and glycidyl methacrylate that undergoes polymerization when exposed to ultraviolet light or mixed with a catalyst. It is used as a bond implant material and as the resin component of dental sealants and composite restorative materials.
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
Forms to which substances are incorporated to improve the delivery and the effectiveness of drugs. Drug carriers are used in drug-delivery systems such as the controlled-release technology to prolong in vivo drug actions, decrease drug metabolism, and reduce drug toxicity. Carriers are also used in designs to increase the effectiveness of drug delivery to the target sites of pharmacological actions. Liposomes, albumin microspheres, soluble synthetic polymers, DNA complexes, protein-drug conjugates, and carrier erythrocytes among others have been employed as biodegradable drug carriers.
Bone-growth regulatory factors that are members of the transforming growth factor-beta superfamily of proteins. They are synthesized as large precursor molecules which are cleaved by proteolytic enzymes. The active form can consist of a dimer of two identical proteins or a heterodimer of two related bone morphogenetic proteins.
Synthetic or natural materials, other than DRUGS, that are used to replace or repair any body TISSUES or bodily function.
The process of bone formation. Histogenesis of bone including ossification.
The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.
Polymerized forms of styrene used as a biocompatible material, especially in dentistry. They are thermoplastic and are used as insulators, for injection molding and casting, as sheets, plates, rods, rigid forms and beads.
Synthetic resins, containing an inert filler, that are widely used in dentistry.
The hardening or polymerization of bonding agents (DENTAL CEMENTS) via exposure to light.
The plan and delineation of prostheses in general or a specific prosthesis.
VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE.
Replacement for a knee joint.
A potent osteoinductive protein that plays a critical role in the differentiation of osteoprogenitor cells into OSTEOBLASTS.
Procedures used to treat and correct deformities, diseases, and injuries to the MUSCULOSKELETAL SYSTEM, its articulations, and associated structures.
The joint that is formed by the articulation of the head of FEMUR and the ACETABULUM of the PELVIS.
A prosthetic restoration that reproduces the entire surface anatomy of the visible natural crown of a tooth. It may be partial (covering three or more surfaces of a tooth) or complete (covering all surfaces). It is made of gold or other metal, porcelain, or resin.
Partial or total replacement of a joint.
The hard portion of the tooth surrounding the pulp, covered by enamel on the crown and cementum on the root, which is harder and denser than bone but softer than enamel, and is thus readily abraded when left unprotected. (From Jablonski, Dictionary of Dentistry, 1992)
Acrylic acids or acrylates which are substituted in the C-2 position with a methyl group.
Inorganic compounds that contain aluminum as an integral part of the molecule.
A group of twelve VERTEBRAE connected to the ribs that support the upper trunk region.
Elements of limited time intervals, contributing to particular results or situations.
A subfield of acoustics dealing in the radio frequency range higher than acoustic SOUND waves (approximately above 20 kilohertz). Ultrasonic radiation is used therapeutically (DIATHERMY and ULTRASONIC THERAPY) to generate HEAT and to selectively destroy tissues. It is also used in diagnostics, for example, ULTRASONOGRAPHY; ECHOENCEPHALOGRAPHY; and ECHOCARDIOGRAPHY, to visually display echoes received from irradiated tissues.
A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. (From Jablonski's Dictionary of Dentistry, 1992)
Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).
Cements that act through infiltration and polymerization within the dentinal matrix and are used for dental restoration. They can be adhesive resins themselves, adhesion-promoting monomers, or polymerization initiators that act in concert with other agents to form a dentin-bonding system.
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed)
Materials placed inside a root canal for the purpose of obturating or sealing it. The materials may be gutta-percha, silver cones, paste mixtures, or other substances. (Dorland, 28th ed, p631 & Boucher's Clinical Dental Terminology, 4th ed, p187)
Polymers of high molecular weight which at some stage are capable of being molded and then harden to form useful components.
Silver. An element with the atomic symbol Ag, atomic number 47, and atomic weight 107.87. It is a soft metal that is used medically in surgical instruments, dental prostheses, and alloys. Long-continued use of silver salts can lead to a form of poisoning known as ARGYRIA.
The internal resistance of a material to moving some parts of it parallel to a fixed plane, in contrast to stretching (TENSILE STRENGTH) or compression (COMPRESSIVE STRENGTH). Ionic crystals are brittle because, when subjected to shear, ions of the same charge are brought next to each other, which causes repulsion.
A mild astringent and topical protectant with some antiseptic action. It is also used in bandages, pastes, ointments, dental cements, and as a sunblock.
Light sources used to activate polymerization of light-cured DENTAL CEMENTS and DENTAL RESINS. Degree of cure and bond strength depends on exposure time, wavelength, and intensity of the curing light.
One of a pair of irregularly shaped quadrilateral bones situated between the FRONTAL BONE and OCCIPITAL BONE, which together form the sides of the CRANIUM.
An antibacterial agent that is a semisynthetic analog of LINCOMYCIN.
A test to determine the relative hardness of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, Rockwell, Vickers, or Shore. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Composite materials composed of an ion-leachable glass embedded in a polymeric matrix. They differ from GLASS IONOMER CEMENTS in that partially silanized glass particles are used to provide a direct bond to the resin matrix and the matrix is primarily formed by a light-activated, radical polymerization reaction.
Use of a metal casting, usually with a post in the pulp or root canal, designed to support and retain an artificial crown.
X-RAY COMPUTERIZED TOMOGRAPHY with resolution in the micrometer range.
Restorations of metal, porcelain, or plastic made to fit a cavity preparation, then cemented into the tooth. Onlays are restorations which fit into cavity preparations and overlay the occlusal surface of a tooth or teeth. Onlays are retained by frictional or mechanical factors.
Relating to the size of solids.
Resorption or wasting of the tooth-supporting bone (ALVEOLAR PROCESS) in the MAXILLA or MANDIBLE.
An inner coating, as of varnish or other protective substance, to cover the dental cavity wall. It is usually a resinous film-forming agent dissolved in a volatile solvent, or a suspension of calcium hydroxide in a solution of a synthetic resin. The lining seals the dentinal tubules and protects the pulp before a restoration is inserted. (Jablonski, Illustrated Dictionary of Dentistry, 1982)
Procedures that avoid use of open, invasive surgery in favor of closed or local surgery. These generally involve use of laparoscopic devices and remote-control manipulation of instruments with indirect observation of the surgical field through an endoscope or similar device.
Use of radiolabeled antibodies for diagnostic imaging of neoplasms. Antitumor antibodies are labeled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera.
A white powder prepared from lime that has many medical and industrial uses. It is in many dental formulations, especially for root canal filling.
The seepage of fluids, debris, and micro-organisms between the walls of a prepared dental cavity and the restoration.
Chemistry dealing with the composition and preparation of agents having PHARMACOLOGIC ACTIONS or diagnostic use.
Antibacterial obtained from Streptomyces orientalis. It is a glycopeptide related to RISTOCETIN that inhibits bacterial cell wall assembly and is toxic to kidneys and the inner ear.
A restoration designed to remain in service for not less than 20 to 30 years, usually made of gold casting, cohesive gold, or amalgam. (Jablonski, Dictionary of Dentistry, 1992)
Encrustations, formed from microbes (bacteria, algae, fungi, plankton, or protozoa) embedding in extracellular polymers, that adhere to surfaces such as teeth (DENTAL DEPOSITS); PROSTHESES AND IMPLANTS; and catheters. Biofilms are prevented from forming by treating surfaces with DENTIFRICES; DISINFECTANTS; ANTI-INFECTIVE AGENTS; and antifouling agents.
A large multinuclear cell associated with the BONE RESORPTION. An odontoclast, also called cementoclast, is cytomorphologically the same as an osteoclast and is involved in CEMENTUM resorption.
A group of phosphate minerals that includes ten mineral species and has the general formula X5(YO4)3Z, where X is usually calcium or lead, Y is phosphorus or arsenic, and Z is chlorine, fluorine, or OH-. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Materials used in the production of dental bases, restorations, impressions, prostheses, etc.
Benign unilocular lytic areas in the proximal end of a long bone with well defined and narrow endosteal margins. The cysts contain fluid and the cyst walls may contain some giant cells. Bone cysts usually occur in males between the ages 3-15 years.

Cement migration after THR. A comparison of charnley elite and exeter femoral stems using RSA. (1/1009)

Studies using roentgen stereophotogrammetric analysis (RSA) have shown that the femoral components of cemented total hip replacements (THR) migrate distally relative to the bone, but it is not clear whether this occurs at the cement-implant or the cement-bone interface or within the cement mantle. Our aim was to determine where this migration occurred, since this has important implications for the way in which implants function and fail. Using RSA we compared for two years the migration of the tip of the stem with that of the cement restrictor for two different designs of THR, the Exeter and Charnley Elite. We have assumed that if the cement restrictor migrates, then at least part of the cement mantle also migrates. Our results have shown that the Exeter migrates distally three times faster than the Charnley Elite and at different interfaces. With the Exeter migration was at the cement-implant interface whereas with the Charnley Elite there was migration at both the cement-bone and the cement-implant interfaces.  (+info)

Induction of macrophage C-C chemokine expression by titanium alloy and bone cement particles. (2/1009)

Particulate wear debris is associated with periprosthetic inflammation and loosening in total joint arthroplasty. We tested the effects of titanium alloy (Ti-alloy) and PMMA particles on monocyte/macrophage expression of the C-C chemokines, monocyte chemoattractant protein-1 (MCP-1), monocyte inflammatory protein-1 alpha (MIP-1alpha), and regulated upon activation normal T expressed and secreted protein (RANTES). Periprosthetic granulomatous tissue was analysed for expression of macrophage chemokines by immunohistochemistry. Chemokine expression in human monocytes/macrophages exposed to Ti-alloy and PMMA particles in vitro was determined by RT-PCR, ELISA and monocyte migration. We observed MCP-1 and MIP-1alpha expression in all tissue samples from failed arthroplasties. Ti-alloy and PMMA particles increased expression of MCP-1 and MIP-1alpha in macrophages in vitro in a dose- and time-dependent manner whereas RANTES was not detected. mRNA signal levels for MCP-1 and MIP-1alpha were also observed in cells after exposure to particles. Monocyte migration was stimulated by culture medium collected from macrophages exposed to Ti-alloy and PMMA particles. Antibodies to MCP-1 and MIP-1alpha inhibited chemotactic activity of the culture medium samples. Release of C-C chemokines by macrophages in response to wear particles may contribute to chronic inflammation at the bone-implant interface in total joint arthroplasty.  (+info)

The inadequacy of standard radiographs in detecting flaws in the cement mantle. (3/1009)

Radiological assessment of the cement mantle is used routinely to determine the outcome of total hip replacement. We performed a simulated replacement arthroplasty on cadaver femora and took standard postoperative radiographs. The femora were then sectioned into 7 mm slices starting at the calcar, and high-resolution faxitron radiographs were taken of these sections. Analysis of the faxitron images showed that defects in the cement mantle were observed up to 100 times more frequently than on the standard films. We therefore encourage the search for a better technique in assessing the cement mantle.  (+info)

Total knee replacement: should it be cemented or hybrid? (4/1009)

OBJECTIVE: To compare the complication rates associated with total knee arthroplasty against the types of fixation (hybrid or cemented), using a single total knee design (the anatomic modular knee [AMK] prosthesis). DESIGN: A prospective, nonrandomized, controlled trial. SETTING: University Hospital in London, Ont., a tertiary care teaching centre. PATIENTS: Two groups made up of 484 knees in 395 patients (89 bilateral). INTERVENTIONS: In 260 knees a hybrid configuration (cemented tibia and noncemented femur) was used (group 1). In 224 knees the femoral and tibial components were cemented (group 2). All patellae were cemented in both groups. MAIN OUTCOME MEASURES: Clinical results were assessed by The Knee Society Clinical Rating Scores at 3 months, 6 months and yearly intervals. Radiographic results were determined by 3-foot standing radiographs and at each follow-up visit standing knee radiographs, lateral and skyline views. Radiographs were analysed for alignment, presence or absence of radiolucent lines or changes in the position of the implant. All reoperations and nonoperative complications were recorded. RESULTS: At an average follow-up of 4.8 years, 8 knees (1.6%) required reoperation. An analysis of the complications leading to reoperation demonstrated no difference between the 2 groups. CONCLUSIONS: There was no difference in outcome whether the femoral component was cemented or not. Medium-term results of the AMK are excellent with a very low reoperation rate.  (+info)

Massive pelvic and femoral pseudotumoral osteolysis secondary to an uncemented total hip arthroplasty. (5/1009)

A 51 year-old man developed an extensive osteolytic response to wear debris in an uncemented porous-coated total hip arthroplasty, with metal/polyethylene interface, which had been implanted eighteen years previously. This reaction, which involved the upper femur and the ilium, produced a mass which compressed the pelvic viscera.  (+info)

Pulmonary embolism caused by acrylic cement: a rare complication of percutaneous vertebroplasty. (6/1009)

A pulmonary embolus of acrylic cement was present in a 41-year-old woman with Langerhans' cell vertebral histiocytosis (LCH) after percutaneous vertebroplasty. Chest radiograph and CT confirmed pulmonary infarction and the presence of cement in the pulmonary arteries. She was treated with anticoagulants, and responded favorably. This rare complication occurred because perivertebral venous migration was not recognized during vertebroplasty. Adequate preparation of cement and biplane fluoroscopy are recommended for vertebroplasty.  (+info)

More failures of uncemented acetabular screw-rings than of cemented polyethylene cups in total hip arthroplasties. (7/1009)

The results of 498 total hip arthroplasties were prospectively studied. In 329 patients a cemented acetabular polyethylene cup was inserted. In 169 patients a threaded socket without cement was introduced. Follow-up ranged from 6 to 8 years and follow-up rate was over 90%. Of the 169 threaded sockets 8 required revision (4.7%), and 3 acetabular components were seen to be loose on X-ray. Of the cemented cups, only 2 (0.6%) required revision and none were considered loose on X-ray.  (+info)

Mid-term migration of a cemented total hip replacement assessed by radiostereometric analysis. (8/1009)

We have previously reported the short-term migration of cemented Hinek femoral components using radiostereometric analysis (RSA). We now report the mid-term migration. During the first 2 years after implantation the prosthesis subsided into varus and rotated internally. Between years 3 and 8 the prosthesis continued to rotate internally with the head moving posteriorly (0.07 mm/year, P=0.004). It also continued to fall into varus with the tip moving laterally (0.07 mm/year, P=0.04). The head (0.06 mm/year, P<0.0001), shoulder (0.04 mm/year, P=0.0001) and tip (0.04 mm/year, P=0.001) continued to migrate distally. There were two cases of failure due to aseptic loosening during the follow-up period. During the second year both of these had posterior head migration, which was abnormally rapid (>2 SD from the mean). We have demonstrated that a cemented implant has slow but significant levels of migration and rotation for at least 8 years after implantation. Our study confirms that implants with abnormally rapid posterior head migration during the second year are likely to fail.  (+info)

BACKGROUND: Although shoulder arthroplasty is an accepted treatment for osteoarthritis, loosening of the glenoid component, which mainly occurs at the bone-cement interface, remains a major concern. Presently, the mechanical effect of the cement mantel thickness on the bone-cement interface is still unclear. METHODS: Finite element analysis of a prosthetic scapula was used to evaluate the effect of cement thickness on stresses and micromotions at the bone-cement interface. The glenoid component was all-polyethylene, keeled and flat back. Cement mantel thickness was gradually increased from 0.5 to 2.0 mm. Two glenohumeral contact forces were applied: concentric and eccentric. Two extreme cases were considered for the bone-cement interface: bonded and debonded. FINDINGS: Within cement, stress increased as cement thickness decreased, reaching the fatigue limit below 1.0 mm. Bone stress was below its ultimate strength and was minimum between 1.0 and 1.5mm. Interface stress was close to the interface
This study aimed to compare the effect of antibiotic-loaded bone cement (ALBC) versus plain bone cement (PBC) on revision rates for periprosthetic joint infection (PJI) and all-cause revisions following primary elective total hip arthroplasty (THA) and total knee arthroplasty (TKA). MEDLINE, Embase, Web of Science, and Cochrane databases were systematically searched for studies comparing ALBC versus PBC, reporting on revision rates for PJI or all-cause revision following primary elective THA or TKA. A random-effects meta-analysis was performed. The study was registered in the International Prospective Register of Systematic Reviews (PROSPERO ID CRD42018107691). Nine studies and one registry report were identified, enabling the inclusion of 371,977 THA and 671,246 TKA. Pooled analysis for THA demonstrated ALBC was protective against revision for PJI compared with PBC (relative risk (RR) 0.66, 95% confidence interval (CI) 0.56 to 0.77; p < 0.001), however, no differences were seen for all-cause ...
A bone cement mixer having a cartridge filled with bone cement powder and a monomer well for receiving monomer liquid to be flowed into the bone cement powder. The monomer liquid flows by gravity in a stream near the outer periphery of the bone cement powder. The stream penetrates the bone cement powder and forms a partial cylinder of monomer-rich powder essentially uniformly along the height of the bone cement powder. The powder and liquid are then mechanically mixed to form bone cement.
Bone cement has been successfully used to anchor artificial joints. The bone cement delivery system is a series of medical equipment that uses bone cement for treatment. Scope of the Report: Bone cement has been successfully used to anchor artificial joints. The bone cement delivery system is a series of medical equipment that uses bone cement for treatment. Bone cement delivery systems have become popular in various types of orthopedic surgery/surgery. There are many benefits to using this device,
Bone Cement Market 2018 Global Analysis, Growth, Trends and Opportunities Research Report Forecasting to 2023. PUNE, MAHARASHTRA, INDIA, February 13, 2018 / - Summary. adds Bone Cement Market 2018 Global Analysis, Growth, Trends and Opportunities Research Report Forecasting to 2023 reports to its database.. This report provides in depth study of Bone Cement Market using SWOT analysis i.e. Strength, Weakness, Opportunities and Threat to the organization. The Bone Cement Market report also provides an in-depth survey of key players in the market which is based on the various objectives of an organization such as profiling, the product outline, the quantity of production, required raw material, and the financial health of the organization.. Bone cement is used for fixation of prosthesis to living bone in orthopaedic musculoskeletal surgical procedures. Commonly referred to as PMMA (polymethylmethacrylate)In this report, 1 pcs bone cement refers to2 main ...
To prevent complication caused by leakage of bone cement injected into the vertebral body, organism damage caused by the leakage of the monomer or a non-cured component from bone cement and decrease of strength caused by insufficient curing of bone cement, in the percutaneous kyphoplasty, a leakage prevention bag for injecting and filling a bone cement is used, wherein the bad is made of a bioabsorbable material having a molecular weight of 5,000 to 500,000 and has a bag having the thickness of 10 to 800 μm, an injection tube is attached to an injection port for injecting the bone cement of the bag, the bag is inserted into a cavity formed in the vertebra body, and the bone cement is injected and filled into the bag through the tube.
Headline: Bitcoin & Blockchain Searches Exceed Trump! Blockchain Stocks Are Next!. United States Bone Cement Gun Market Production, Supply, Sales, and Demand Research Report is a systematically conducted exhaustive study of the United States Bone Cement Gun market. The aim of the United States Bone Cement Gun Industry report is to assist novice as well as seeded players in gaining astute business intelligence and make apt decisions based on it.. Detailed TOC and Charts & Tables of United States Bone Cement Gun Market Research Report available at- The analysis in the United States Bone Cement Gun Market report is of a two-fold perspective, production and sales. This commercial study encompasses detailed investigation of production, supply, sales, demand, price, cost, income and revenue on United States Bone Cement Gun Industry in Major Regions.. The report analyses the entire production and supply chain of the industry and provides information as per ...
The fracture or failure behaviours of four commercial acrylic-based bone cements have been examined in tensile, bending and compression modes, and their mechanical properties are reviewed. It was found that Palacos R-40 bone cement had high radiopaque agent concentration, with high surface hardness. It exhibited a much lower bending strength and bending modulus compared with the other three bone cements (CMW1, CMW2000 and Simplex P). The textures of tensile fracture surfaces produced were similar for the four bone cements studied. The fracture surface was fragmented by crevices, which developed through the matrix and around large undissolved polymethylmethacrylate (PMMA) beads. Three bands with different features existed on the bending fracture surfaces, with an abrupt transition between them. It appears that the agglomerates of zirconium dioxide particles are implicated in Palacos R-40 bone cement fracture surface. The examination of compressive failed specimens revealed that a yielded crack ...
0003]Polymethylmethacrylate bone cements can be mixed in suitable mixing beakers with spatulas by mixing the cement powder with the monomer liquid. This procedure is disadvantageous in that inclusions of air may be present in the cement dough thus formed and may later cause destabilization of the bone cement. For this reason, it is preferable to mix bone cement powder with the monomer liquid in vacuum mixing systems, since mixing in a vacuum removes inclusions of air from the cement dough all but completely and attains optimal cement quality (Breusch, S. J. et al., Der Stand der Zementiertechnik in Deutschland [The State of Cementing Technology in Germany], Z. Orthop., 137: 101-07 (1999)). Bone cements mixed in a vacuum have substantially lower porosity and thus show improved mechanical properties. A large number of vacuum cementing systems have been disclosed of which the following shall be named for exemplary purposes: U.S. Pat. Nos. 6,033,105; 5,624,184; 4,671,263; 4,973,168; 5,100,241; ...
A bone cement mixing apparatus for mixing a powder bone cement component with a liquid bone cement component includes a bowl and a lid removably secured to the bowl. The lid has a sealable liquid delivery port defined therein which is adapted to sealingly receive an outlet coupling of a liquid delivery device. The bone cement mixing apparatus also includes a crank rotatably attached to the lid and a blade positioned in the bowl. The blade is secured to the crank such that rotation of the crank causes rotation of the blade. A method for mixing bone cement is also disclosed.
Global Bone Cement & Glue Market report delineates the thorough and collective examination of Bone Cement & Glue industry during the past, present and conjecture period. All the business verticals like aggressive market situation, regional Bone Cement & Glue nearness, and improvement openings are clarified. Top players (Stryker, Zimmer Biomet, Depuy Synthes (A Part Of Johnson & Johnson), Smith & Nephew, Arthrex, Djo Global, Exactech, Teknimed, Heraeus Medical, Cryolife, Cardinal Health, Trimph) of Bone Cement & Glue industry, their business strategies, and growth opportunities are covered in this report. A report is incomplete without having the knowledge of the key players or competitors within the market. Many basic aspects build the market that drives the expansion of associate degree trade or an organization.. Get an exclusive sample of research report: Report Sample. The report analyses the Bone Cement & Glue market based on its engaging quality and venture achievability. Likewise, it ...
We studied fluid flow at the stem-cement interface of bonded and debonded, polished and rough model femoral components. In a first series of experiments, fluid flow along the interface between bone cement and well-fixed model femoral components, differing in surface finish, and in shape, was measured. Fluid migration along the bone-cement interface of rough stems (Ra 3 microm) was greater than that on polished stems (p | 0.001). This was true of cylindrical and conical tapered stems. On stems with the same surface finish, shape did not influence fluid migration. In a second series of experiments, fluid flow along the stem-cement interface of 5 highly polished and 10 rough-finished (5 of Ra approximately 1.5 microm and 5 of Ra approximately 3 microm), debonded, tapered circular stems was measured. None of the rough stems could prevent fluid flow along the stem-cement interface. Polished tapered stems sealed the interface and, after 48 hrs of continuous pressure, no fluid flow was observed. This
icotec ag partners with G-21 to provide combined bone cement and delivery solution for pedicle screw augmentation procedures. (Credit: PRNewsfoto/icotec ag). icotec ag, a leading medical device manufacturer of Carbon/PEEK implants, strategically corporates with G-21 to distribute their bone cements in conjunction with icotecs VADER® Pedicle Screw System in the United States.. The VADER® Pedicle System is intended to restore the integrity of the spinal column even in the absence of fusion in patients with advanced stage tumors involving the thoracic or lumbar spine in whom life expectance, prior to oncological treatment, is of insufficient duration to permit achievement of fusion.. The VADER® screws fenestration allows for bone cement augmentation following icotecs state-of-the-art standard open, minimally invasive, or percutaneous surgical procedure to increase stability in patients with compromised bone quality caused by spinal tumors.. The G-21 bone cements are a perfect complement to ...
Market Trends. Several techniques have been implemented in recent years to prevent bone infections, including stringent and effective antiseptic operative processes and systemic antibiotic prophylaxis. The use of antibiotic-loaded bone cement is becoming increasingly common among these procedures. Demand for the product is also being driven by the rising prevalence of osteoporosis and hip and knee replacement surgeries, particularly among the aging population.. Moreover, Other factors driving market growth include continued growth in the orthobiological industry, progressing healthcare industry and rising public awareness. Rapid technological advancements and increased research and development activities are expected to boost the global antibiotic bone cement industrys growth during the forecast period.. Read Full Report Online: Key Market Players. The major players in the market are Smith & Nephew, Inc., Stryker ...
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Two-stage exchange with antibiotic-loaded bone cement spacers remains the gold standard for chronic periprosthetic joint infection (PJI). Rifampicin is highly efficient on stationary-phase staphylococci in biofilm; however, its addition to PMMA to manufacture spacers prevents polymerization and reduces mechanical properties. Isolation of rifampicin during polymerization by microencapsulation could allow manufacturing rifampicin-loaded bone cement maintaining elution and mechanical properties. Microcapsules of rifampicin with alginate, polyhydroxybutyratehydroxyvalerate (PHBV), ethylcellulose and stearic acid (SA) were synthesized. Alginate and PHBV microcapsules were added to bone cement and elution, compression, bending, hardness, setting time and microbiological tests were performed. Repeated measures ANOVA and Bonferroni post-hoc test were performed, considering a p,0.05 as statistical significance. Bone cement specimens containing alginate microcapsules eluted more rifampicin than PHBV ...
Bone cement creep behavior was studied using commercial available clinical bone cement. Creep deformation was measured using a micrometer with a resolution of 1 μm. It was demonstrated that the restraint has a very strong effect on the creep of bone cement, half-restrained specimens creep more than that of fully restrained specimens. The creep of the investigated bone cement increased with the dynamic loading cycles, and two creep stages, a high initial creep rate followed by a steady creep stage, can be identified. The relationship between the creep deformation and the loading cycles was expressed by a single logarithmic model.. ...
The Global market size of Bone cement mixers is $XX million in 2018 with XX CAGR from 2014 to 2018, and it is expected to reach $XX million by the end of 2024 with a CAGR of XX% from 2019 to 2024.. Global Bone cement mixers Market Report 2019 - Market Size, Share, Price, Trend and Forecast is a professional and in-depth study on the current state of the global Bone cement mixers industry. The key insights of the report:. Download for a sample copy of this report @ 1.The report provides key statistics on the market status of the Bone cement mixers manufacturers and is a valuable source of guidance and direction for companies and individuals interested in the industry.. 2.The report provides a basic overview of the industry including its definition, applications and manufacturing technology.. 3.The report presents the company profile, product specifications, capacity, production value, and 2013-2018 market shares ...
Feb 21, 2018· Talking to several retail cement traders in different areas of Dhaka on Monday, this correspondent found that each bag of Crown Cement was being sold at Tk 420, Fresh Cement at Tk 410, Ruby Cement at Tk 415, Akij Cement at Tk 425, Shah Cement (special) at Tk 400, Premier Cement at Tk 380, Holcim Cement at Tk 430, Scan Cement at Tk 430, and ...
The efficacy of antibiotic-loaded acrylic bone cements (ALBC) for prophylaxis of deep surgical site infections (deep SSIs) after primary cemented joint replacement surgery remains controversial. Therefore, the purpose of this study was to examine the issue, with respect to three types of arthroplasty, namely, total knee arthroplasty (TKA), total hip arthroplasty (THA), and bipolar hip arthroplasty (BHA).
The mechanical effects of varying the depth of cement penetration in the cement-bone interface were investigated using finite element analysis (FEA) and validated using companion experimental data. Two FEA models of the cement-bone interface were created from micro-computed tomography data and the penetration of cement into the bone was varied over six levels each. The FEA models, consisting of the interdigitated cement-bone constructs with friction between cement and bone, were loaded to failure in tension and in shear. The cement and bone elements had provision for crack formation due to excessive stress. The interfacial strength showed a strong relationship with the average interdigitation (r(2)=0.97 and r(2)=0.93 in tension and shear, respectively). Also, the interface strength was strongly related with the contact area (r(2)=0.98 and r(2)=0.95 in tension and shear, respectively). The FEA results compared favorably to the stiffness-strength relationships determined experimentally. Overall, ...
A novel bone cement composed of sintered zinc-calcium-silicate phosphate and hybrid polyalkenoates has been developed. Synthesis and formulation of glass fillers, monomers and polymers as well as formulation of the cement were described. The effects of sintering, polymer content, glass powder/polymer liquid (P/L) ratio and comonomer on compressive strength (CS) and curing time (CT) were investigated. The effects of P/L ratio and comonomers on shrinkage as well as exotherm were also studied. Results show that the experimental cement was 61% higher in CS, 10% lower in diametral tensile strength, 35% lower in flexural strength, 62% less in exotherm, and 68% less in shrinkage, compared to conventional polymethylmethacrylate cement. With increasing polymer content and P/L ratio in the cement formulation CS of the cement increased but CT decreased. Curing time, shrinkage and exotherm of the cement decreased with increasing P/L ratio. It appears that this novel cement may be a potential candidate for ...
A custom made femoral component is made using the femoral cavity and an internal latex envelope as the mold. After the femoral cavity is worked into a roughly conical shape, an internal latex envelope is inserted into the cavity and filled with bone cement. An endoskeleton is inserted down the femoral cavity into the bone cement. The internal latex mold conforms to the shape of the cavity and an accurate negative of the cavity is created as the bone cement solidifies. The femoral component is pulled from the cavity and the internal latex envelope is peeled off the component. All traces of the internal latex envelope is removed from the femoral cavity and component. The femoral component is then reimplanted.
A prosthetic cement spacer for controlling the thickness of cement applied between a prosthetic insert and a support member, such as an acetabulum, includes a generally cylindrical standoff body portion fabricated from acrylic bone cement and a pointed wire concentric with said standoff body and outwardly extending from one end a sufficient length to anchor into the acetabulum bone surface. The method of use of these prosthetic cement spacers involves preparation of the acetabulum so that there is sufficient clearance space for the prosthetic cement spacers and then to insert the pointed wires into the acetabulum bone surface in an equilateral triangular arrangement thereby providing three points of contact for the prosthetic insert, such as an acetabular cup. By selecting three prosthetic cement spacers all having substantially the same standoff body height, the clearance region between the acetabulum bone surface and the acetabular cup is controlled and provides a uniform cement thickness
The standard cementing technique for total hip and knee arthroplasty (THA, TKA) was modified by interposing osteoconductive porous polycrystalline hydroxyapatite (HA) granules at the cement-bone interface to augment cement-bone bonding. Twenty-one specimens from the acetabulum and two specimens from the femur containing well-fixed bone-cement interface were retrieved five months to twenty-two years after THA and TKA with an interface bioactive bone cement technique. Histological findings were evaluated in terms of the retrieved sites, the interval between index operation and revision, patient age at retrieval and bone pathology. Dense bone ingrowth was observed in all specimens retrieved from the superior wall of the acetabulum. Cancellous bone ingrowth was observed in specimens retrieved from the infero-medial wall of the acetabulum. Connective tissue interposition and osteolysis were observed at the sites where hydroxyapatite granules were absent. Findings of bone ingrowth for the HA ...
2018 Trans Tech Publications, Switzerland. In this research, mechanical properties of bone cement containing micro- and nano-hydroxyapatite (HAp) particles were studied. The bone cement was prepared from mixing between polymethyl methacrylate (PMMA) and methyl methacrylate (MMA). Hydroxyapatite powder was prepared from bovine bone. The bone was heated in hot water at 200oc for the elimination of tissue, after which the bone was dried and calcined at 800oc for 3 hrs. The calcined bone then was crushed into powder and ball-milled for 24 hrs. The micro-HAp particle was then obtained. The micro particles were then further milled employing the Vibro-milling machine for 2 hrs. The micro- and nano- HAp sizes are about 0.5 µm and 140 nm, respectively. The both size powders were treated with γ-methacrylic-propyl-tri-methoxy silane. The acetic acid was added to control the pH of the solution, until it reached 2.9 before they were mixed into the bone cement with equally wt%. The mixture was casted using ...
TY - JOUR. T1 - LOWER RISK OF THROMBOEMBOLIC DISEASE AFTER TOTAL HIP REPLACEMENT WITH NON-CEMENTED THAN WITH CEMENTED PROSTHESES. AU - Francis, C. W.. AU - Marder, V. J.. AU - Evarts, C. M.. PY - 1986/4/5. Y1 - 1986/4/5. N2 - During the course of a prospective, randomised trial comparing dextran 40 with antithrombin III plus heparin as prophylaxis against thrombosis after total hip replacement, an unexpectedly low incidence of postoperative thromboembolic disease was found in patients receiving non-cemented (0 of 23) rather than cemented prostheses (4 of 13, 31%). Despite the small number of patients, the difference was significant and necessitated modification of the protocol. These preliminary findings suggest that the type of hip replacement used was more important than the type of antithrombotic medication in preventing venous thrombosis and pulmonary embolism.. AB - During the course of a prospective, randomised trial comparing dextran 40 with antithrombin III plus heparin as prophylaxis ...
Seda is a supplier of G21 Bone Cement: find out more on this quality orthopedic bone cement, used in Vertebroplasty and other applications. Download data sheet.
Antibiotics 2014-2019Viscosity 2014-2019Vacuum mixing system 2014-2019 Elbow » Primary elbow arthroplasty » Bone cement » Antibiotics 2014-2019 Elbow » Primary elbow arthroplasty » Bone cement » Viscosity 2014-2019 Elbow » Primary elbow arthroplasty » Bone cement » Vacuum mixing system 2014-2019
Two-stage revision arthroplasty is today considered as the gold standard for control of chronic deep prosthetic infection. Although the revision arthroplasty should only be considered when infection is eliminated, the diagnosis of residual infection prior to the revision remains a challenging problem. We evaluated triple-phase bone scintigraphy as a useful diagnostic test for the detection of residual infection around the antibiotic-impregnated cement spacer in patients waiting for the second-stage revision hip or knee arthroplasty. Increased uptake of radioisotope in all three phases was considered positive for infection. The final diagnosis was based on histopathological results in addition to microbiologic examinations of surgical specimens. Histopathological examination showed positive in 17 and negative in 13 out of 30 examinations. Among 17 samples positive for histopathology, there were only 4 samples positive for bacterial culture. All samples negative for histopathology showed negative for
Poly (methyl methacrylate) (PMMA) bone cement is widely used in vertebral body augmentation procedures such as vertebroplasty and balloon kyphoplasty. Filling high modulus PMMA increases the modulus of filled verterbra, increasing the risk of fracture in the adjacent vertebra. On the other hand, in porous PMMA bone cements, wear particle generation and deterioration of mechanical performance are the major drawbacks. This study adopts a new approach by utilizing linoleic acid coated strontium substituted hydroxyapatite nanoparticle (Sr-5 HA) and linoleic acid as plasticizer reducing bone cements modulus with minimal impact on its strength. We determined the compressive strength (UCS) and modulus (Ec), hydrophobicity, injectability, in vitro bioactivity and biocompatibility of this bone cement at different filler and linoleic acid loading. At 20 wt % Sr5-HA incorporation, UCS and Ec were reduced from 63 ± 2 MPa, 2142 ± 129 MPa to 58 ± 2 MPa, 1785 ± 64 MPa, respectively. UCS and Ec were ...
Current commercial polymethylmethacrylate based antibiotics-loaded bone cements exhibit low drug release antibiotics embedded inside polymerized bone cement
TY - JOUR. T1 - The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle. AU - Baleani, M.. AU - Bialoblocka-Juszczyk, E.. AU - Engels, G. E.. AU - Viceconti, M.. PY - 2010/3. Y1 - 2010/3. N2 - We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean temperature values measured within the mantle (+14.2°C) (p ,0.001) and reduced the mean curing time (-1.5 min) (p ,0.001). The addition of vacuum mixing modulated the mean rise in the temperature of polymerisation to 11°C and reduced the mean duration of the ...
TY - CONF. T1 - Characterisation of mechanical properties of acrylic bone cement as a function of aging conditions and mixing environment. AU - Makem, Jonathan. PY - 2005/1. Y1 - 2005/1. M3 - Paper. SP - 326. EP - 335. ER - ...
F2118-14 Standard Test Method for Constant Amplitude of Force Controlled Fatigue Testing of Acrylic Bone Cement Materials constant-amplitude uniaxial tension-compression fatigue~
Total Hip Replacement: With Acrylic Cement Fixation A cemented prosthesis is designed to have a layer of bone cement, typically an acrylic polymer called polymethylmethacrylate (PMMA), in between the patients natural bone and the prosthetic joint component. Bone cement allows a surgeon to affix prosthetic joint components to a bone that is slightly porous from osteoporosis. A small amount of antibiotic material can be added to the bone cement, helping to decrease the risk of post-surgical infection.. Total Hip Replacement: Without Cement Fixation. Also called as press-fit prosthesis it is a surgical procedure in which bone is attached to a metal implant if the surface of the metal has certain topography. This process is called porous ingrowth or osseointegration. The bone must be prepared precisely for these devices because close apposition to bone is necessary for bone to grow up to the smooth surface (osteointegration) or into the pores of the porous surfaces. Surface coatings, such as ...
By Chris ClementsThe cement table is a popular fixture at many construction sites, and its often the only one available in the room.. Its simple to install and the table can be placed in the exact location where you need it.. But its not always the best choice when it comes to installing cement floor.. Clements explains how to install a cement table.. The easiest and quickest way to install an cement table in a construction room is to use the top of the table as a template.. If you dont have the template handy, you can buy it online or buy a premade one.. Then, use the template to draw a rectangular shape on the cement floor that you want the table to be.. This will help ensure that the cement table will be placed exactly where you want it.. Cements cement table template (image via Shutterstock)Once youve got the template, youll need to drill a hole for the table in the floor.. Then attach the template and drill a new hole for it in the cement.. The cement floor can be sanded down or ...
The cement-bone interface plays an important role in load transfer between cemented implant systems and adjacent bone, but little is known about the micromechanical behavior of this interface following in vivo service. Small samples of postmortem-retrieved cement-bone specimens from cemented total hip replacements were prepared and mechanically loaded to determine the response to tensile and compressive loading. The morphology of the cement-bone interface was quantified using a CT-based stereology approach. Laboratoryprepared specimens were used to represent immediate postoperative conditions for comparison. The stiffness and strength of the cement - bone interface from postmortem retrievals was much lower than that measured from laboratory-prepared specimens. The cement-bone interfaces from postmortem retrievals were very compliant (under tension and compression) and had a very low tensile strength (0.21±0.32 MPa). A linear regression model, including interface contact fraction and ...
PURPOSE The usual treatment in cervical nerve root compression syndrome is the ventral fusion with bone cement. We examined the influence of this interponate on the postoperative changes of the cervical spine. MATERIALS AND METHODS 33 patients were followed-up postoperatively over 6 months, who were treated with 39 ventral fusions because of cervical myelopathy. The lateral view of the cervical spine was used to measure the size of the bone cement interponate, the height of the intervertebral body space and the angle of both vertebral bodies. RESULTS There was no change on the size of the interponate. Postoperatively there was a slight enlargement of the intervertebral body space. During further follow-up examinations there was a decrease to the preoperative size because of the destruction of the endplates. Similar to this observation, there was a change of the angle in the operated segment. First there was a decrease of the angle, later an increase. 6 months postoperatively the preoperatively
Robust fixation of implants is very important as in younger patients these joints are required to last 20 to 30 years or even more. Charnley used a material called acrylic bone cement to fix the implants to the bone which had previously been used by dental surgeons and this material can still be very effective. The bone cement is made by mixing a fluid component with a powder component and the liquid becomes doughy within a few minutes, becomes like putty within about four of five minutes and most cements set around the ten minute mark. The exact setting characteristics of the cement do differ somewhat depending on the different types of materials used in the bone cement. So some bone cements can set quite quickly in five minutes and others can set over a longer period over 15 minutes. Once set the cement is very strong under compression and forms a very good bond between the prosthesis whether it be the femoral component or acetabular component or indeed the femoral component of a knee ...
In a device for injecting bone cement, the discharge direction of the bone cement after insertion of the cannula should be controllable in a certain region. This is made possible through a radial exit aperture ( 5 ) which is provided on the front end of the cannula ( 3 ). Since the cannula is inserted with the aid of a guide wire ( 1 ), it has an orifice ( 4 ) on its front end, which orifice must be closed off by means of a ball ( 15 ) prior to the injection. A plunger serves to insert the ball ( 15 ). So that the situation of the radial aperture ( 5 ) is known at all times, even with inserted cannula, the handle ( 17 ) of the cannula has an asymmetrical shape.
SEATTLE (AP) -- The physician who used a non-FDA-approved bone cement during a womans spinal surgery and the company that ran an illegal test market to promote the dangerous product should be held accountable for her death, a lawyer for the womans daughter told a jury Monday.. Reba Golden was vibrant and healthy when she agreed to let Dr. Jens Chapman operate on her back in 2007, but the surgeon never told Golden or her family that he planned to use a bone cement associated with blood clotting and patient deaths, said attorney Rick Friedman, who represents Cynthia Wilson in a lawsuit against the surgeon, the University of Washington and Synthes Inc.. Read More. ...
GlobalDatas new report, Asia-Pacific Orthopedic Bone Cement and Casting Materials Market Outlook to 2020, provides key market data on the Asia-Pacific Orthopedic Bone Cement and Casting Materials
Global Bone Cement Mixer Devices Market Size, Share, Trends and industry analysis now available from IndustryARC.Report reveals Bone Cement Mixer Devices Market in the industry by Type, Products and application.
Orthopedic Bone Cement Market Trends, Analysis, Industry Overview and Business Research Reports. Orthopedic Bone Cement Market Syndicate Report, Share, Size and Forecast Reports - UK and US
The invention relates to surgical bone cement compositions and more particularly to bone cement compositions having aneasthetic properties, and to methods for producing analgesia.
Bone cement PubMed Central PMC. Dec 15 2013 · 2 Historical perspective Themistokles Gluck 1870 had fixed a total knee prosthesis made of ivory using cement made of plaster and colophony 3 Otto Rohm and Kulzer were early pioneers who worked extensively on the physical properties and uses of bone cement The era of modern PMMA bone cements comes from the patent by Degussa and Kulzer 1943 who had described the Read More + ...
TY - JOUR. T1 - Fatigue crack propagation in polymethylmethacrylate bone cements. AU - Wright, Timothy M.. AU - Robinson, Raymond P.. PY - 1982/9/1. Y1 - 1982/9/1. N2 - The fatigue crack propagation behaviour of a conventional polymethylmethacrylate (PMMA) bone cement was examined and compared with those of a low-viscosity PMMA cement and a carbon-fibre reinforced PMMA cement. The low-viscosity PMMA cement, developed for use in cement pressurization systems, did not differ significantly from conventional PMMA cement in its crack propagation behaviour. The carbon-fibre reinforced PMMA cement exhibited crack propagation rates which were approximately an order of magnitude less than those of conventional PMMA at the same range of stress intensity factor. Fractography of the test specimens revealed separation around prepolymerized PMMA beads and void formation around barium sulphate particles. Examination of carbon reinforced PMMA specimens showed poor mechanical bonding between the carbon fibres ...
The population in developed countries is ageing and the number of people experiencing joint-related conditions, such as osteoarthritis, is expected to increase. Joint replacements are currently the most effective treatment for severe joint conditions and although many of these procedures are successful, infection developing after the procedure is still an issue, requiring complex and expensive revisions. Whilst incorporating a powdered antibiotic within the bone cement can reduce infection rates, the powder frequently agglomerates, resulting in poor antibiotic release characteristics and compromised mechanical performance of the cement. To overcome these issues, a novel delivery system consisting of antibiotic-loaded nano-sized liposomes was developed for inclusion into polymethyl methacrylate (PMMA) bone cement. This system was tested in a commercial cement (Palacos R) and consistently delivered a higher percentage (22%) of the incorporated antibiotic when compared to the powdered antibiotic ...
Although poly(methylmethacrylate) (PMMA) cements are widely used in orthopaedics, they have numerous drawbacks. This study aimed to improve their bioactivity and osseointegration by incorporating strontium-containing borate bioactive glass (SrBG) as the reinforcement phase and bioactive filler of PMMA cement. The prepared SrBG/PMMA composite cements showed significantly decreased polymerization temperature when compared with PMMA and retained properties of appropriate setting time and high mechanical strength. The bioactivity of SrBG/PMMA composite cements was confirmed in vitro, evidenced by ion release (Ca, P, B and Sr) from SrBG particles. The cellular responses of MC3T3-E1 cells in vitro demonstrated that SrBG incorporation could promote adhesion, migration, proliferation and collagen secretion of cells. Furthermore, our in vivo investigation revealed that SrBG/PMMA composite cements presented better osseointegration than PMMA bone cement. SrBG in the composite cement could stimulate new-bone
The gold standard for bone replacement today, autologous bone, suffers from several disadvantages, such as the increased risk of infection due to the need for two surgeries. Degradable synthetic materials with properties similar to bone, such as calcium phosphate cements, are a promising alternative. Calcium phosphate cements are suited for a limited amount of applications and improving their physical properties could extend their use into areas previously not considered possible. For example, cement with increased strength could be used as load bearing support in selected applications. The focus of this thesis is, therefore, on how the physical properties of acidic calcium phosphate cements (brushite cements) are affected by compositional variations, with the ultimate aim of making it possible to formulate brushite cements with desired properties.. In this thesis a method to measure the porosity of a cement was developed. This method is advantageous over existing methods as it is easy to use, ...
The gold standard for bone replacement today, autologous bone, suffers from several disadvantages, such as the increased risk of infection due to the need for two surgeries. Degradable synthetic materials with properties similar to bone, such as calcium phosphate cements, are a promising alternative. Calcium phosphate cements are suited for a limited amount of applications and improving their physical properties could extend their use into areas previously not considered possible. For example, cement with increased strength could be used as load bearing support in selected applications. The focus of this thesis is, therefore, on how the physical properties of acidic calcium phosphate cements (brushite cements) are affected by compositional variations, with the ultimate aim of making it possible to formulate brushite cements with desired properties.. In this thesis a method to measure the porosity of a cement was developed. This method is advantageous over existing methods as it is easy to use, ...
Has bone cement in a procedure failed requiring revision surgery? Suffered from Bone Cement Implantation Syndrome? Lawyers handling bone cement lawsuits.
Ball Mills Cement Factory For Clinker Mixing , Crusher ... cement factory for clinker mixing , ® Crusher. Heavy Industry(shanghai) is the best cement factory for clinker mixing manufacturers and suppliers ... » Request a quotation. Cement mill,Cement mill price,Raw material mill,China ... The Handling Materials and Application of Cement Mill: Cement mill is widely used for the cement, the silicate product, new type building material, fire-proof ... » Request a quotation. UNITED STATES PORTLAND CEMENT PLANTS UNITED STATES PORTLAND CEMENT PLANTS (Ranked by size, ... RC Cement Company, Inc. - Festus, MO Essroc Cement Corp. - Nazareth, PA Texas Industries - Oro Grande, CA » Request a quotation. Cement production line,Cement making plant,Cement ... The Major Equipment of Cement Production Line: The main equipment of cement production line are vibrating feeder, jaw crusher, impact crusher, cement ball mill, lifer ... » Request a quotation. Chapter 1 - Introduction to Cement Production Chapter 1 - ...
article{30fb8a18-da4b-4e59-95c6-31e079a74572, abstract = {This article focuses on bone cement, the cementing technique used, and their influence on aseptic loosening and infection of acrylic and joint implants in Scandinavia.}, author = {Lidgren, Lars and Robertson, Otto}, issn = {0030-5898}, language = {eng}, number = {1}, pages = {55--55}, publisher = {W.B. Saunders}, series = {Orthopedic Clinics of North America}, title = {Acrylic bone cements: clinical developments and current status: Scandinavia.}, url = {}, doi = {10.1016/j.ocl.2004.06.008}, volume = {36}, year = {2005 ...
TY - CONF. T1 - Incorporation of chitosan in acrylic bone cement: effect on antibiotic release and bacterial biofilm formation.. AU - Brady, Aaron. AU - Tunney, Michael. AU - Dunne, Nicholas. PY - 2007. Y1 - 2007. KW - biofilm. KW - bone cement. M3 - Poster. T2 - Society for General Microbiology. Y2 - 1 March 2012 through 1 March 2012. ER - ...
Kerrier calcium sulfate beads are fully absorbable unlike PMMA bone cement and have clear advantages over commercial Plaster of Paris (POP). Order online today.
Calcium phosphate cements are used in medicine to fill bone defects or give support to screws and plates in fracture fixation. The cements are formed via mixing a powder with water and the mixture harden through a dissolution-precipitation reaction. Today the cement mixing is performed in the operating room and consists of several complicated steps that need to be performed under sterile conditions. This renders the mixing a risk factor, potentially leading to harm for the patient e.g. unsatisfactory healing or infection. To reduce this risk, premixed cements have been developed using glycerol as mixing liquid. The premixed cement sets when it is exposed to body liquids. Therefore, premixed cement can be delivered to the operating room in prefilled syringes ready for use, thus eliminating the mixing step.. The aim of this thesis is to describe differences between premixed and water-mixed cements and their advantages and drawbacks. The differences will be discussed based on results obtained from ...
Pre-revision radiographs showed the presence of both full and partial RLL. On contact radiographs of 5 mm thick sections of the interface the total percentage of radiolucency ranged from 0 to 90% between patients. There was no consistent pattern for the distribution of radiolucency. Histological assessment demonstrated that under every tibial component there were areas where there was direct contact and interdigitation between bone and cement. The amount of direct bone-cement contact was between 19% and 95% of the tibial tray surface area. The remaining tissue was mainly fibrocartilage but there was also fibrous tissue. The presence of radiolucency was strongly inversely correlated with the percentage of cement-bone contact ...
Bioceramics 19: The Effect of Lif-Maleic Acid Added Calcium Aluminate Bone Cement and Ca-PMMA Composite Bone Cement on Bone Regeneration in Rat Calvarial Defects
Calcium phosphate cements (CPC) are well-established bone replacement materials that have been used in dentistry and orthopedics for more than 25 years. The monitoring of bone cements and the associated healing processes in the human body is difficult and so far has often been achieved using cytotoxic X-ray contrast agent additives. These additives have a negative effect on the mechanical properties and setting time of the bone cement. In this paper, we present a novel approach to prepare contrastive CPC by the incorporation of luminescent Eu3+-doped hydroxyapatite (Eu:HAp) nanoparticles. Eu-doped CPC (Eu:CPC) exhibited enhanced mechanical properties compared to pure CPC. Furthermore, the red photoluminescence of Eu:CPC may allow the observation of CPC-related healing processes without the use of harmful ionizing radiation.
Characterization of the intricate pore structure of calcium phosphate cements is a key step to successfully link the structural properties of these synthetic bone grafts with their most relevant properties, such as in vitro or in vivo behaviour, drug loading and release properties, or degradation over time. This is a challenging task due to the wide range of pore sizes in calcium phosphate cements, compared to most other ceramic biomaterials. This work provides a critical assessment of three different techniques based on different physical phenomena, namely mercury intrusion porosimetry (MIP), Nitrogen sorption, and thermoporometry (TPM) for the detailed characterization of four calcium phosphate cements with different textural properties in terms of total porosity, pore size distribution (PSD), and pore entrance size distribution (PESD). MIP covers a much wider size range than TPM and Nitrogen sorption, offering more comprehensive information at the micrometer level. TPM, and especially ...
A heavy infiltrate of foreign-body macrophages is commonly seen in the fibrous membrane which surrounds an aseptically loose cemented implant. This is in response to particles of polymethylmethacrylate (PMMA) bone cement and other biomaterials. We have previously shown that monocytes and macrophages responding to particles of bone cement are capable of differentiating into osteoclastic cells which resorb bone. To determine whether the radio-opaque additives barium sulphate (BaSO4) and zirconium dioxide (ZrO2) influence this process, particles of PMMA with and without these agents were added to mouse monocytes and cocultured with osteoblast-like cells on bone slices. Osteoclast differentiation, as shown by the presence of the osteoclast-associated enzyme tartrate-resistant acid phosphatase (TRAP) and lacunar bone resorption, was observed in all cocultures. The addition of PMMA alone to these cocultures caused no increase in TRAP expression or bone resorption relative to control cocultures. Adding PMMA
WEDNESDAY, April 7, 2021 (HealthDay News) - Among patients with normal renal function at baseline who are treated with a high-dose antibiotic-loaded bone cement (ALBC) spacer and systemic antibiotic therapy after resection of a periprosthetic joint infection (PJI) following a primary total knee arthroplasty (TKA), 14 percent develop acute kidney injury (AKI), according to a study published online March 29 in The Journal of Bone & Joint Surgery.. Louis Dagneaux, M.D., from the Mayo Clinic in Rochester, Minnesota, and colleagues examined the incidence, risk factors, and outcomes of AKI in a cohort of 424 patients who had been treated with 455 ALBC spacers after resection of a PJI following a primary TKA from 2000 to 2017. The spacers contained a mean of 8 g of vancomycin and 9 g of an aminoglycoside per construct; 86 spacers also had amphotericin B. All patients also received systemic antibiotics for a mean of six weeks.. The researchers identified 54 AKIs in 52 of the 359 patients (14 percent) ...
This video demonstrates placing gel foam (GF) soaked in adrenaline around incudostapedial joint in all directions. Important structures around joint segregated so as to avoid any over spillage of bone cement on surrounding structures. Bone cement paste dropped over incudostapedial joint. Final cementing of incudostapedial joint. Make sure the cement is not touching any structure other than the joint after final placement.
A double-blind study release on August 5, 2009 in the New England Journal of Medicine showed that vertebroplasty a procedure that involves the injection of medical cement into the spines of patients who have spinal fractures proved only equally effective as simulated vertebroplasty with no spinal cement injection. One group of patients received the actual vertebroplasty procedure, and the control group received a mock procedure including everything but the cement injections into their spines.. The studys leader, Dr. David Kallmes, said that while vertebroplasty has been long accepted and utilized as a treatment option for many years, there has been no data or research to verify its effectiveness. The findings of the study conducted by a team of researchers at the Mayo Clinic in Rochester, MN showed that relief of pain and improvement in dysfunctions related to the pain proceeded similarly in both the group of patients who received the vertebroplasty and the control group who did not. The ...
This study aims to evaluate in vitro the release properties and biological behavior of original compositions of strontium (Sr)-loaded bone mineral cements. Strontium was introduced into vaterite CaCO3-dicalcium phosphate dihydrate cement via two routes: as SrCO3 in the solid phase (SrS cements), and as SrCl2 dissolved in the liquid phase (SrL cements), leading to different cement compositions after setting. Complementary analytical techniques implemented to thoroughly investigate the release/dissolution mechanism of Sr-loaded cements at pH 7.4 and 37°C during 3 weeks revealed a sustained release of Sr and a centripetal dissolution of the more soluble phase (vaterite) limited by a diffusion process. In all cases, the initial burst of the Ca and Sr release (highest for the SrL cements) that occurred over 48 h did not have a significant effect on the expression of bone markers (alkaline phosphatase, osteocalcin), the levels of which remained overexpressed after 15 days of culture with human ...
Fluid Penetration into Antimicrobial Loaded Bone Cement is a Good Indicator for Antimicrobial Release. Background: Antimicrobial loaded bone cement (ALBC)
C~ment® is a product range of bone cements that is used for the fixation of artificial joints. Bone cement fills the space between the prosthesis and the bone. It allows for an immediate and stable fixation of the surgical implant. The C~ment® product range distinguishes itself by its convenient mixing characteristics and excellent mechanical properties.. C~ment is a European Registered Trade Mark property of Biomed of France. C~® is a copyright Logo and Registered Trade Mark of Biomed of France.. C~ment® is available in four types:. - a standard viscosity C~ment® 1 in a 40g pack ...
Megjegyzés: Chemicals/CAS: amikacin, 37517-28-5, 39831-55-5; cefazolin, 25953-19-9, 27164-46-1; clindamycin, 18323-44-9; daptomycin, 103060-53-3; flucloxacillin, 1847-24-1, 5250-39-5; fusidic acid, 6990-06-3; gentamicin, 1392-48-9, 1403-66-3, 1405-41-0; meropenem, 96036-03-2; oxacillin, 1173-88-2, 66-79-5, 7240-38-2; palacos, 9011-14-7, 9011-87-4; tobramycin, 32986-56-4; vancomycin, 1404-90-6, 1404-93-9; Anti-Bacterial Agents; Polymethyl Methacrylate, 9011-14-7 Tradenames: Cemex; Endurance; Palacos, Schering Plough; SmartSet Manufacturers: Schering ...
The RFA and/or vertebroplasty with cement injection were successful in all patients (100%). Except for one patient who had cement leakage, no intraprocedural complications occurred. After RFA, severe refractory pain was greatly relieved in all patients, with pretreatment VAS score of 8.1±1.4 significantly reduced to 5.5±1.1 at 24 h, 2.8±0.6 at one week and 1.4±0.8 at 6 months (P,0.01). The EORTC QLQ-C30 scale at one month demonstrated significant improvement (P,0.05) in the physical (P=0.03) and emotion function (P=0.003), global health status (P=0.002), pain (P=0.001) and insomnia (P=0.002). The analgesics were reduced after the procedure and stopped two months later in all patients, with greatly improved quality of life and no apparent pain. Followed up for 6-12 months, all patients remained alive with no recurrence of pain. ...
In orthopaedics, PMMA bone cement is used to affix implants and to remodel lost bone. It is supplied as a powder with liquid methyl methacrylate (MMA). When mixed these yield a dough-like cement that gradually hardens. Surgeons can judge the curing of the PMMA bone cement by pressing their thumb on it. Although PMMA is biologically compatible, MMA is considered to be an irritant and a possible carcinogen. PMMA has also been linked to cardiopulmonary events in the operating room due to hypotension. [8] Bone cement acts like a grout and not so much like a glue in arthroplasty. Although sticky, it primarily fills the spaces between the prosthesis and the bone preventing motion. It has a Youngs modulus between cancellous bone and cortical bone. Thus it is a load sharing entity in the body not causing bone resorption. [9] ...
Fingerprint Dive into the research topics of Biomechanical behavior of novel composite PMMA-CaP bone cements in an anatomically accurate cadaveric vertebroplasty model. Together they form a unique fingerprint. ...
Polymer modified calcium phosphate cements made with cement powders of varying tetracalcium phosphate [TTC P] content were prepared using two different molecular weight fractions of poly(acrylic acid)
Hydroxyapatite cement was investigated in situ for the reconstruction of juxta-articular defects. Polymethylmethacrylate is currently the most commonly used material for the reconstruction of bone defects following the exteriorization and curettage of aggressive benign tumors. In vitro, we compared the effects of hydroxyapatite cement and polymethylmethacrylate in restoring the stiffness of the subchondral plate in a caprine femoral defect model. Ten matched pairs of caprine femora underwent nondestructive compression testing normal to the load-bearing surface. A standardized subchondral defect 12 mm in diameter was created in the medial femoral condyle. Compression testing was repeated to determine the reduction in stiffness caused by the defect. Each femur from each pair was randomly assigned to one of two groups (n=9), and the defects were augmented with either polymethylmethacrylate or hydroxyapatite cement. After 12 hours, compression testing was repeated to determine the subchondral stiffness
Holcim (Bangladesh) Ltd. - leading suppliers of cement and aggregates. Holcim is a leading multinational cement manufacturing company in Bangladesh. Holcim Cement Bangladesh Ltd (HBL), under the umbrella of Holcim Switzerland, started its operation in 2000. Currently the company has three cement manufacturing plants in Bangladesh.Holcim Cement Plant Construction Project McCarthy. Holcim Cement Plant. This project took than one million man-hours, 80,000 cubic yards of concrete, 13,000 tons of steel and a recruiting effort that drew laborers from 16 states - which was to be expected for the nations newest and largest cement plant at that time.Holcim Cement Plant. This project took than one million man-hours, 80,000 cubic yards of concrete, 13,000 tons of steel and a recruiting effort that drew laborers from 16 states - which was to be expected for the nations newest and largest cement plant at that time. However, it took the highly successful project execution of McCarthy.. ...
About Heraeus Medical. Heraeus Medical is a leader in the area of bone cements and biomaterials for surgical orthopaedics and trauma surgery. This enables the company to make an important contribution to supporting surgeons and the surgical team and to improve surgery outcomes. In the area of biomaterials, Heraeus Medical focuses on products for use in bone and joint surgery. The core product PALACOS® is considered the gold standard among bone cements and has repeatedly proven itself for over 60 years of clinical use. The first bone cement with antibiotic for infection prophylaxis in endoprosthetics was developed more than 45 years ago with PALACOS® R+G.. About Heraeus A globally leading technology group, Heraeus is headquartered in Hanau, Germany. Founded in 1851, it is a family-owned portfolio company which traces its roots back to a pharmacy opened by the family in 1660. Today, Heraeus combines businesses in the environmental, energy, electronics, health, mobility and industrial ...
After diagnosis of infection and informed consent, patients will be taken to the operating room. After anesthetization, patients will be randomized to either an articulating spacer or static spacer. Randomization will be performed by prepared opaque envelopes administered by a nonparticipant in the study. After a complete debridement of devitalized tissue, explantation of infected components and any associated cement, either an articulating or static spacer will be placed. All spacers will be formed using 3.0 g of Vancomycin and 1.0 g of Tobramycin for each 40 g packet of cement. Articulating spacers will be formed of antibiotic-impregnated cement using the Stage One system (Biomet, Warsaw, IN) sized to fit the endosteal and acetabular bone defect. Static spacers will be hand-made with a rod of antibiotic-impregnated cement and cement beads of sufficient quantity to fill the acetabulum.. Post-operatively, all patients will be made touch-down weight bearing protected with a walker or crutches. At ...
Nov 21, 2019 Cement crusher, cement mill and cement rotary kiln are three necessary cement plant equipment, AGICO Cement is a cement plant manufacturer supplies cement plant machineies and EPC project for cement manufacturing, welcome to ask!
Autori: zaharia c., moreau m.f., zecheru t., marculescu b., filmon r., cincu c., basle m.f., chappard d. Editorial: 34th european symposium on calcified tissues, copenhagen, 2007.. Rezumat:. Poly(methyl methacrylate -pMMA) is used as dental or bone cement. A major drawback of the polymeric biomaterials is that they are radiolucent since they hardly absorb X-ray radiation due to the absence of heavy elements within their structure ...
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Class Action Lawsuit Information regarding Bone Cement Implantation Syndrome (BCIS) after hip replacement surgery. Click here or call (866) 588-0600.
Calcium Phosphate Bone Cements. By Erdem Şahin. Biomaterials utilized in biomedical applications are of various characteristics and cements are unique in their in situ, biomimetic formation ability. They present the most topographically complex surfaces that usually elicit a favorable cellular response for tissue regeneration. In addition their composition may provide an effective chemical gradient around the resorbing implant to induce desired cellular activity that leads to rapid wound healing and regeneration. These are the main reasons for many cement systems to function well in the body, especially as hard tissue replacements. The properties and the setting mechanisms of the clinically most relevant cement system, calcium phosphate cements have been elucidated in this chapter.. Part of the book: Cement Based Materials ...
Finally, I wonder how much my forehead can be protrude by surgery. You know I am Asian, and I want to make my forehead and brow bone protrude as much as a Caucasian, if its possible. I really want to know whether its possible or not.. A: I have done forehead and brow bone augmentation over my career by every conceivable method including PMMA and hydroxyapatite bone cements, prefrormed Medpor implants and, more recently, custom forehead and brow bone implants.. Each of these methods have their own distinct advantages and disadvantages…neither one is perfect. Bone cements are very good to use but they require a lot of intraoperative shaping, can be very expensive (HA cements) and can lead to frontal bossing/protrusions if the forehead and brow bones is brought too far forward. (as bone cements should not extend beyond the anterior temporal lines onto the tenporalis muscle fascia where they will not adhere and can lead to visible edging). To place them well, they require a long coronal incision ...
TABLE-US-00019 TABLE 16 Compressive strength (MPa) values of TTCP/DCPA/CSH composite porous blocks prepared from TTCP/DCPA/CSH/KCl (pore-forming agent)-mixed powders mixed with 0.6M (NH4)2HPO4 (L/P = 0.33 cc/g) Impregnated in Impregnated in TTCP/ Without Without 1M (NH4)2HPO4, 1M (NH4)2HPO4, DCPA:CSH impregnation impregnation at 37° C. for 1 d at 37° C. for 1 d (weight TTCP/DCPA/CSH:KCl = TTCP/DCPA/CSH:KCl = TTCP/DCPA/CSH:KCl = TTCP/DCPA/CSH:KCl = ratio) 1:1 (weight ratio) 1:2 (weight ratio) 1:1 (weight ratio) 1:2 (weight ratio) 90:10 4.86 ± 0.43 0.92 ± 0.18 8.43 ± 0.73 1.62 ± 0.28 85:15 5.00 ± 0.64 0.82 ± 0.23 7.29 ± 0.54 1.22 ± 0.19 75:25 4.18 ± 0.49 0.74 ± 0.10 7.03 ± 0.49 0.98 ± 0.18 65:35 3.74 ± 0.42 0.51 ± 0.07 5.19 ± 0.26 0.91 ± 0.05 55:45 2.36 ± 0.19 0.42 ± 0.06 4.01 ± 0.56 0.71 ± 0.10 Impregnated in Impregnated in TTCP/ 1M K2HPO4, 1M K2HPO4, DCPA:CSH at 37° C. for 1 d at 37° C. for 1 d (weight TTCP/DCPA/CSH:KCl = TTCP/DCPA/CSH:KCl = ratio) 1:1 (weight ratio) 1:2 ...
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Free Consultation - Call (800) 525-6386 - Neumann Law Group is dedicated to serving our clients with a range of legal services including Defective Medical Device and Product Liability cases. Bone Cement - Grand Rapids Defective Medical Device Lawyer
Laboratory bench tests have shown that porosity reduction increases the fatigue life of bone cement specimens. Clinically, however, the effect porosity reduction is subject to debate. We hypothesized that the discrepancy between clinical and experimental findings is related to differences in the stress distribution, which is typically uniform in experimental test specimens, while stress concentrations exist in cement around hip implants. We simulated fatigue failure of cement in a finite element model of an experimental test specimen and of a transverse slice of a total hip arthroplasty with a sharp-cornered stem. Four levels of porosity were introduced. In the fatigue test specimen model, the fatigue life clearly was dependent on the level of porosity, while in the transverse slice model, the level of porosity had virtually no effect on failure of the cement mantle. The results of the simulations confirmed our hypothesis. In simulations of laboratory tests, pores clearly acted as crack ...
Bone Cement & Glue Market Research: Global Status & Forecast by Geography, Type & Application (2015-2025) is a market research report available at US $2280 for a Single User PDF License from RnR Market Research Reports Library.
Zimmer Biomet offers bone cement options and a broad spectrum of surgical equipment designed to save time and money in the operating room.
Zimmer Biomet offers bone cement options and a broad spectrum of surgical equipment designed to save time and money in the operating room.
Bone Cement - MedDirect is NZs No.1 Online Medical Product Directory - find New Zealand Medical Companies supplying products you are looking for.
Polymethyl-methacrylate (PMMA) as part of bone cement is a widely used material in the context of orthopaedic implants and also in cranioplasty. Although PMMA is characterised by excellent biocompatibility with low intrinsic toxicity and inflammatory activation, a minor portion of patients develop allergic reactions. We present the case of a 39-year-old woman with an increasing headache and a corresponding erythema over the parieto-occipital cranioplasty, which was performed 42 days prior using a PMMA compound. A patch test specific for bone cement components confirmed the diagnosis of a PMMA delayed-type hypersensitivity reaction. The prevalence of allergic reactions to bone cement components are known to vary from between 0.6% and 1.6%, however no adequate, pre-interventional diagnostic tool is currently available. Therefore, physicians are required to consider this differential diagnosis even after an extremely delayed onset of symptoms. This case describes the first ever-reported case in the ...
Cement; Wolverine (November 21, 1992) Cockroaches; Broken Bones; Dentist Chair; Rhinoceros (November 28, 1992) Omnimax ... Funny Bone Chat; Onions & Tears Chat (November 19, 1983) Color Blindness; Taste Buds; Black Hole Chat (November 26, 1983) ... Bone Marrow; King's Singers; Rotting Foods (December 9, 1995) Wild Lion Vet; Bicycles; Fish Breathing; Insect Warfare (December ... Bones; Coyotes (December 28, 1996) Wetlands; Eco-Filtration; Drinking Water; Water Tower (January 4, 1997) Lost World Dinosaurs ...
She is currently editing a book on Bone Cements by the Woodhead Publishing UK (Journal). Her profile on ORCID can be found here ... Deb, S. (2008). Orthopaedic Bone Cements. Elsevier. ISBN 978-1-84569-517-0. Deb, S., ed. (2015). Biomaterials for Oral and ... "Curently [sic] editing a book on Bone Cements: Woodhead Publishing UK (Journal) - Research Portal, King's College, London". ... Palmer, Richard M. Evaluation of a β-Calcium Metaphosphate Bone Graft Containing Bone Morphogenetic Protein-7 in Rabbit ...
A cement line demarcates articular calcified cartilage from subchondral bones.[citation needed] Once damaged, cartilage has ... Bone morphogenetic proteins are growth factors released during embryonic development to induce condensation and determination ... This temporary cartilage is gradually replaced by bone (Endochondral ossification), a process that ends at puberty. In contrast ... and new bone produced in the vascular space in a process similar to endochondral ossification at the physis. ...
... Medical manufactures bone cement and develops coatings for medical implants. Its products are used in orthopedic ...
Bone cement has been the material most often used, in spite of its tendency to slippage and resorption, and a consequent high ... Once diagnosed, the gap in the temporal bone can be repaired by surgical resurfacing of the affected bone or plugging of the ... Resurfacing with calcium phosphate bone cement". Australian Journal of Otolaryngology. 4 (3): 167-173. Teixido, Michael; ... A clinical sign of this phenomenon is the ability of the patient to hear (not feel) a tuning fork placed upon the ankle bone. ...
Anselmetti, Giovanni Carlo (June 2010). "Osteoplasty: Percutaneous Bone Cement Injection beyond the Spine". Seminars in ... It is the surgical alteration or reshaping of bone. It may be used to relieve pain associated with metastatic bone disease.[ ... Osteoplasty is the branch of surgery concerned with bone repair or bone grafting. ... Percutaneous osteoplasty involves the use of bone cement to reduce pain and improve mobility. Resection osteoplasty is used in ...
Use of the bone cement resulted in the deaths of three people. Wyss was not indicted, but four top executives of Synthes were ... Attorneys for Eastern Pennsylvania for using an untested calcium-phosphate-based bone cement on human patients without ... "Bad to the Bone - a Medical Horror Story",, 18 September 2012. "Three people died in illegal human experiments ... a medical device manufacturer making internal screws and plates for broken bones. He founded the company after meeting Martin ...
"While time hardens cement, at this age, it does not heal bones". "K S Sudarshan: Born into RSS". " ...
firm to pay $23M for illegal bone cement tests". Yahoo News/Associated Press. Retrieved 2010-10-05. "Synthes acquires U.S. ... According to the indictment, before the marketing program began, pilot studies showed the company that the bone cement reacted ... In October 2010, Synthes and its subsidiary Norian both pleaded guilty to crimes relating to illegally implanting bone cement ... In 2009 the U.S. attorney in Philadelphia accused the company of illegally promoting a bone void filler for unapproved uses, ...
The haversian canal contains the bone's blood supplies. The boundary of an osteon is the cement line. Each haversian canal is ... Haversian canals Cortical bone (compact bone) Cancellous bone (spongy bone) Ross, Lawrence M.; Lamperti, Edward D., eds. (2006 ... Archived 2015-03-04 at the Wayback Machine Bone [dead link] - BioWeb at University of ... In bioarchaeological research and in forensic investigations, osteons in a bone fragment can be used to determine the sex of an ...
Bone cement acts like a grout and not so much like a glue in arthroplasty. Although sticky, it does not bond to either the bone ... In orthopedic surgery, PMMA bone cement is used to affix implants and to remodel lost bone. It is supplied as a powder with ... A disadvantage of this bone cement is that it heats up to 82.5 °C (180.5 °F) while setting that may cause thermal necrosis of ... "Low-modulus PMMA bone cement modified with castor oil". Bio-Medical Materials and Engineering. 21 (5-6): 323-332. doi:10.3233/ ...
In medicine, it is used in bone cement and to replace eye lenses. Acrylic paint consists of PMMA particles suspended in water. ...
Gruber, H. E.; Mekikian, P. (1991). "Application of stains-all for demarcation of cement lines in methacrylate embedded bone". ... It is used in SDS-PAGE, agarose gel electrophoresis and histologic staining, e.g. staining of growth lines in bones. Green, M. ...
DTA may be used in cement chemistry, mineralogical research and in environmental studies. DTA curves may also be used to date ... "The application of differential thermal analysis and thermogravimetric analysis to dating bone remains". Journal of Forensic ... Ramachandran V.S. "Applications of differential thermal analysis in cement chemistry". Chap. V, Chemical Publishing Co., Inc., ... bone remains or to study archaeological materials. Using DTA one can obtain liquidus & solidus lines of phase diagrams. ...
The basin is made of cement and tile. The dimensions of the sculpture are 9'6" × 4' × 4'. The dimensions of the fountain basin ... Instruments consist of saxophones, sousaphones, trombones, trumpets, and tubas. The sculpture sits in a fountain basin, which ...
4-7-year stereoradiographic follow-up of 84 cemented prostheses". The Journal of Bone and Joint Surgery. British Volume. 76 (6 ... Two synchronised x-ray foci are used to obtain a stereo image of the bone and the prosthesis. The positions of the foci are ... To achieve the high accuracy, the following steps are carried out: Small radio opaque markers are introduced in the bone and ... The coordinates of the bone and prosthesis markers are accurately measured and the three-dimensional position of the markers is ...
November 28, 1963: A cement truck collided with a bus near Gilbert Plains, Manitoba. The truck driver died. The bus driver and ... a passenger sustained broken bones. June 16, 1967: A runaway loaded gravel truck collided head on with an eastbound bus ...
He had the tumour cut out, with the hole filled up with bone cement. In 2016, he joined the Wests Tigers. In round 15, ... After initially playing from the bench, he cemented a position starting at lock for the last 6 games of the year. In August, ...
The cement that reflected these features was produced by CMW Laboratories Limited and was called CMW bone cement. Charnley also ... Charnley was convinced that the best way to fix the prosthesis into the femur was to use bone cement that acted as a grout ... His first attempt consisted in introducing antibiotics such as gentamicin into the bone cement; the bacterial count decreased, ... He was resident in the hospital for six months in 1946, during which he developed his interest in bone grafting. In order to ...
Metal components are then impacted onto the bone or fixed using polymethylmethacrylate (PMMA) cement. Alternative techniques ... The ends of these bones then are cut accurately to shape, using cutting guides oriented to the long axis of the bones. The ... tibial and patellar components of a total knee replacement are fixed to the bone by using either cement or cementless total ... Cemented fixation is performed on the vast majority of total knee replacements. However, short-term trials suggest that there ...
Loosening of the components: the bond between the bone and the components or the cement may break down or fatigue. As a result ... cement. Alternative techniques exist that affix the implant without cement. These cement-less techniques may involve ... The ends of these bones are then accurately cut to shape using cutting guides oriented to the long axis of the bones. The ... the component moves inside the bone, causing pain. Fragments of wear debris may cause an inflammatory reaction with bone ...
... hundreds of sculptures made from chicken bones, ceramic and cast cement; pin-up style photos of his wife, Marie; plus dozens of ... in leftover chicken and turkey bones. Architecturally imposing bone structures resulted. After soaking the bones in ammonia and ... This time, however, his paintings were informed by the decade he spent constructing architectural bone sculptures. His later ... The exhibit, entitled "Eugene Von Bruenchenhein: Freelance Artist-Poet and Sculptor-Inovator-Arrow maker and Plant man-Bone ...
"Technological issues for the development of more efficient calcium phosphate bone cements: A critical assessment". Biomaterials ... is a component used in the formation of some hydroxyapatite calcium phosphate cements that used for the repair of bone defects ... One example of a hydroxyapatite cement forming reaction is that of tetracalcium phosphate and dicalcium diphosphate dihydrate: ... Tetracalcium phosphate is a component in some calcium phosphate cements that have medical applications. Tetracalcium phosphate ...
The pin was held in place by an organic resin, analogous to modern bone cement. By doing so, those who performed the operation ...
Many different types of glue held these sections together, most commonly Irish glue and bone glue. This was until hilton glue, ... or cement glue, was introduced because of its waterproof qualities. Even today, Tonkin split-bamboo rods are still popular in ...
... to immobilize broken bones, or for metal casting). Mixed with polymers, it has been used as a bone repair cement. Small amounts ... It has been used in bone regeneration as a graft material and graft binder (or extender) and as a barrier in guided bone tissue ... 2 CaSO4 + 2 SiO2 → 2 CaSiO3 + 2 SO2 + O2 The plant made sulfuric acid by the "Anhydrite Process" , in which cement clinker ... Titus, Harry W.; McNally, Edmund; Hilberg, Frank C. (1933-01-01). "Effect of Calcium Carbonate and Calcium Sulphate on Bone ...
The dentition was thecodont (tooth roots deeply cemented within the jaw bone). Teeth were constantly shed through a process ... The palate, which consists of the pterygoid bones, palatine bone, and nearby processes of other bones, is tightly packed to ... Microanatomical studies on bones of juvenile Mosasaurus and related genera have found that their bone structures are comparable ... Isolated bones suggest some M. hoffmannii may have exceeded the lengths of the Penza specimen. One such bone is a quadrate ( ...
Her work considers degradable and non-degradable composite bone cements, as well as dental restorative materials. She works ... Similar to the dental materials, injectable materials for bone repair or drug delivery can mimic nearby bone. These bone repair ... Alongside the design of materials for dentistry, Young is developing degradable materials for bone repair. ... where she works on the development and characterisation of new materials for the repair of tooth and bone. Young studied ...
Veering between Collins soul/pop and Clapton blues/rock, August cemented Clapton's comeback. "It's in the Way That You Use It ... trombone (2, 4, 6, 7, 9) Randy Brecker - trumpet (2, 4, 6, 7, 9) Jon Faddis - trumpet (2, 4, 6, 7, 9) Leon Pendarvis - horn ... and trombone player Dave Bargeron. Collins, East and Phillinganes would recreate their studio roles for Clapton's acclaimed ...
The bones were crushed on cement with mallets and added to the ashes. These were transported every night in sacks made of ... Eventually, the camp authorities bought a bone-crushing machine (Knochenmühle) from Schriever and Co. in Hamburg to speed up ...
Cream EP (1. Cream Bun 2. Jealousy 3. Brittle Bones 4. Sonic Blue) (1994), Laurel ... The line up was cemented when Richard Davies (guitar) and Jon Solomon (drums) replaced Spalding and Sanford. This was the line ...
The wingtip bones of swiftlets are of proportionately greater length than those of most other birds. Changing the angle between ... The nests are composed of interwoven strands of salivary cement and contain high levels of calcium, iron, potassium, and ... the bones of the wingtips and forelimbs allows swifts to alter the shape and area of their wings to increase their efficiency ...
They were laid down as deposits of mud, silt, sand and lime (calcium-rich deposits from shells and bones) that, over long ...
... and cement for bone regeneration.[43] Amylopectin is usually combined with a synthetic polymer with higher elastic modulus and ... Fibers in biomaterials can be used for bone tissue engineering as suitable environment for bone tissue repair and regeneration ... Natural bone is a complex composite material composed of an extracellular matrix of mineralized fibers containing living cells ... This allows for starch to withstand the higher fluid flow and mechanical forces prevalent in bone, cardiac, and endothelial ...
He was ruled out of the 2018 Indian Premier League due to injury, having tibial bone stress in his right leg sustained in a ... "Starc vying for chance to cement place". ESPNcricinfo. Retrieved 6 October 2022 ... MRI scans showed that Starc once again had bone spurs in his ankles. He required cortisone injections to treat inflammation in ... "Starc out of IPL 2018 with 'tibial bone stress'". Cricbuzz. Retrieved 30 March 2018.. ...
1965 - Construction of the cement bridge on the Batiscan River. 1968 (November) - Covered Bridge on the Batiscan River is ... "crushed bone", "dried meat" and "rushes to the mouth." The Post Office is itself designated since 1891 under the name of "Saint ...
He sold the oil but still has the bones." Frank kept a pair of live buffalo at Dry Gulch Ranch which he acquired in a barter ... and an eight-foot-winged cement butterfly inlaid with colorful tiles." The locals referred to it as "Knapp Castle". The ... Geologists investigating the find told Knapp the stones he had pulled out of the well were fossilized whale bones. ...
A large hole was found near the baby pliosaur that could have once held the bones of its mother or other pod members. An ... 1934 The "surgeon's photograph" of the Loch Ness monster was hoaxed, cementing the association between plesiosaurs and the ... The poorly preserved bones required a significant amount of plaster for the restoration, earning the specimen the mocking ... The researchers noticed that its bones were very dense. So dense, they speculated it would naturally sink in the water and ...
This hypothesis is, however, false, (can we clarify 10th or 11th century bone found. IE how do we know it is 10th or 11th ... Salazar's decision to stick with the oldest alliance in the world, cemented by the Treaty of Windsor (1386) between Portugal ... Tenth- or eleventh-century fragments of mouse bone found in Madeira, along with mitochondrial DNA of Madeiran mice, could maybe ...
Typically, thick and dense bone is found in bottom feeders and low bone density is associated with mammals living in deep water ... More elaborate exhibits contain deep pools that can be viewed underwater with rock-mimicking cement as haul-out areas. The most ... This is followed by the colonization of bones and surrounding sediments (which contain organic matter) by enrichment ... Finally, sulfophilic bacteria reduce the bones releasing hydrogen sulphide enabling the growth of chemoautotrophic organisms, ...
Not only did she dislocate her shoulder, she actually cracked a rib, and chipped her shoulder bone......She's such a trooper, ... "the song could have been written about stuffed animals or how cement - Mariah Carey would have still found a way to make the ...
He studied their bone structure and drew sketches. Since then he has modelled goats while they are eating, sleeping or while ... Then he tries to shape the form out of clay, wax, cement or plasticine. It needs to be a flexible material so he can play with ... Some were painted and some were made out of cement. Rolf Brem was even able to make some money by selling them to his ...
Barham wrote the songs in the wake of a break-up, helping to cement a familiar theme of women who either got away or did the ... Their sophomore effort received some critical attention, and that same year the band released the minimalist live EP Bones, ... "American Aquarium- The Bible and the Bottle & Bones [EP]". 2008-06-03. Retrieved 2020-05-03. Brian Howe (2013- ... Bones (2008) Dances for the Lonely (Last Chance Records, 2009) Small Town Hymns (Last Chance Records, 2010) Live in Raleigh ( ...
These capitals' authority over their neighbouring settlements is thought to have been cemented, at least in part, by their ... eg bone tools, ceramic vases), and paintings on murals (eg those in San Bartolo, Guatemala) (Sharer & Traxler 2006, pp. 120, ... to which period are dated ceramic spindle whorls and bone needles recovered from the same regions. Additionally, plaster with a ...
Lawson, Terry (January 1, 2000). "The Bone Collector". Detroit Free Press. Archived from the original on February 3, 2015. ... cementing Jolie's appeal to international audiences. She received a Golden Globe Award nomination for her performance, which ... Jolie then co-starred with Denzel Washington in The Bone Collector (1999), playing a police officer who reluctantly helps ...
The historic county of Monmouthshire, lying in the Welsh Marches (the Anglo-Welsh border), is a bone of contention for some ... was cemented. Towards the end of the 18th century the monarch still had considerable influence over Parliament, which was ...
Due to the increase in porosity of bones through collagen loss, the bone becomes susceptible to hydrolytic infiltration where ... After deposition, sediments are compacted as they are buried beneath successive layers of sediment and cemented by minerals ... This is accomplished by the exchange of natural bone constituents, deposition in voids or defects, adsorption onto the bone ... During this phase, most bone collagen is lost and porosity is increased. The dissolution of the mineral phase caused by low pH ...
Slant Magazine called it "contrived ... for all the so-called weighty subject matter, there's not much meat on these bones." ... The film was a critical and commercial success, grossing $129 million worldwide and, according to Brandon Gray, "cementing her ...
Germany where he had three more surgeries within a span of a week-one on each arm and one on his pelvic bone. His ... Đukanović who eventually ended up prevailing in the inter-party showdown and thus cemented his hold on power in Montenegro. In ... The thirty-nine-year-old FSCG president fractured both arms and a pelvic bone after crashing his Yamaha motorcycle into the ...
Beneath these layers was a thick deposit ranging between 10 and 145 feet thick of green sands, often cemented with calcium ... rich in chalk from marine plankton as well as shells and fish bones, tied to the same expansion of seas that left the earlier ...
Sacred Bones Records. 2018. SBR-195CD.{{cite AV media notes}}: CS1 maint: others in cite AV media (notes) (link) Whatley, Jack ... "It's the scale of Freedom's sound that cements it as an instantaneous classic; far and away McMahon's most complete work to ... It was released on March 30, 2018 by Sacred Bones Records. The album was written by Damon McMahon in Portugal and New York City ... The artist name and album title are located in the upper right-hand corner along with the Sacred Bones Records logo and catalog ...
While bone fragments discovered in one of Herzog and Shermantine's disposal sites was thought to belong to Garecht, DNA ... The car may have had cement splatters on the sides and lights set into the rear bumper. The front bumper was battered; the ... Thousands of bone fragments belonging to five different individuals were recovered from the well, some of which were believed ... However, DNA profiling completed later that year excluded Garecht as a possibility; the bones believed to have been hers were ...
Hafting and use of bone and antler points from Ksar Akil, Lebanon. in D. Stordeur (ed.) La Main et l'Outil. Travaux de la ... cemented into breccia. At the time of death, Egbert is estimated to have been 7 to 9 years old, and due to its small size, may ...
As if to cement the association of ideas, the wry cover picture has George in solitary splendour, surrounded by a quartet of ... trombone, horn arrangement John Barham - string arrangement Harrison had already adapted a passage from the Tao Te Ching, a ...
... "further cements the band's place in Christian music for their artful expressions of our faith." Lastly, Breimeier said with ... trombone (7), keyboards (8) Paul Nelson - cello (3, 10) Kara Gause - choir (11) Production John Mays - executive producer ...
A shortage of cement appears to have delayed the project until 10,000 tons of cement was imported from England in January 1951 ... whose bones were discovered in 1963 near Muttaburra (220 kilometres (140 mi) by road from Hughenden) and some teeth and other ... "English Cement for Qld. Govt". Daily Mercury. Vol. 85, no. 12. Queensland, Australia. 13 January 1951. p. 1. Archived from the ... bones were also discovered around Hughenden. One reason for fossils being discovered must be the dry climate, which means the ...
His flow patterns have been compared by writers to those of Cleveland-based hip hop group Bone Thugs-n-Harmony. August Brown of ... "cemented" his reputation, while citing Clams Casino's beats as "some of the year's most imaginative, evocative hip-hop ...
Bone meal as a power source Coordinates: 51°23′51″N 3°23′35″W / 51.39750°N 3.39306°W / 51.39750; -3.39306 (Use dmy dates ... Lafarge Cement UK bought Blue Circle industries PLC in 2001, creating the largest cement maker in the world. Cement from the ... Aberthaw Cement Works are cement works in the Vale of Glamorgan near the village of East Aberthaw in Wales. The Blue Lias ... The first consignment of cement left Aberthaw works by rail in 1914. A third wet kiln was ordered in 1913 and erected in 1916 ...
"Cementing Friendly Relations" New York Times, Dec. 25, 1937. "About Some Whales, Human Variety."New York Times, June 12, 1942 " ... He turned pale as he watched three whales devour 27 dozen oysters and six huge T-bone steaks." Heights and weights are taken ... He ordered 27 dozen oysters and six huge T-bone steaks. Slight Miscalculation - The waiter was ready when Gillis, McDonald and ...
This cemented Bryant's reputation as a "clutch player". In the first game of the 2002-03 season, Bryant recorded 27 points, 10 ... Joseph, Adi (December 20, 2013). "Lakers' Kobe Bryant breaks bone in knee, out 6 weeks". USA Today. Archived from the original ... Three championships were won consecutively in 2000, 2001, and 2002, further cementing this view. Bryant was sidelined for six ...
... are anchored with bone cement. The bone cement fills the free space between the prosthesis and the bone and plays the important ... Bone cements are provided as two-component materials. Bone cements consist of a powder (i.e., pre-polymerized PMMA and or PMMA ... If the patient is known to have any allergies to constituents of the bone cement, according to current knowledge bone cement ... Anchorage without cement - cement-free implant placement - is the alternative. New bone cement formulations require ...
New ways to print, and new printing materials, are making bio-friendly 3D printed bone parts a reality. ...
Two types of BA cement, dough and injection type, were prepared by changing their che … ... BA cement) which consists of CaO-SiO2-P2O5-MgO-CaF2 (AW glass-ceramic) powder and bisphenol-a-glycidyl methacrylate (Bis-GMA) ... This paper is a summary of already published papers on the bioactive bone cement ( ... while with PMMA cement an intervening soft tissue layer was always observed at the cement-bone interface. BA cement was used in ...
Bone Reconstruction Cements from Kenya was 17434 US Dollars. Discover more data with NationMaster! ... Export of Dental Cements and Other Dental Fillings, ... Export of Dental Cements and Other Dental Fillings, Bone ... How does Kenya rank in Export of Dental Cements and Other Dental Fillings, Bone Reconstruction Cements?. #. 98 Countries. US ... Import of Dental Cements and Other Dental Fillings, Bone Reconstruction Cements to Kenya ...
VertaPlex HV bone cement is a high viscosity bone cement that contributes to a controlled interdigitation and fill. ... VertaPlex HV bone cement. VertaPlex HV bone cement is a high viscosity bone cement that contributes to a controlled ... In 2015, VertaPlex HV bone cement became the first PMMA in the U.S. to receive 510(k) clearance for the fixation of ... We set the bar in 2009 with the release of VertaPlex HV bone cement, addressing specific viscosity and working time preferences ...
... ,br,,br,,b,Market Outlook,/b,,br,According to the report by Expert ... 8.2 Global Bone Cement Historical Market (2017-2021) 8.3 Global Bone Cement Market Forecast (2022-2027). 8.4 Global Bone Cement ... 8.2 Global Bone Cement Historical Market (2017-2021) 8.3 Global Bone Cement Market Forecast (2022-2027). 8.4 Global Bone Cement ... Global Bone Cement Market Report and Forecast 2022-2027. Abstract Global Bone Cement Market Report and Forecast 2022-2027. ...
Bone Reconstruction Cements from Botswana was 992 US Dollars. Discover more data with NationMaster! ... Export of Dental Cements and Other Dental Fillings, ... Export of Dental Cements and Other Dental Fillings, Bone ... How does Botswana rank in Export of Dental Cements and Other Dental Fillings, Bone Reconstruction Cements?. #. 98 Countries. US ... Import of Dental Cements and Other Dental Fillings, Bone Reconstruction Cements to Botswana ...
Two formulations of bone cements and two bioactive glasses were compared with the fresh cancellous bone autograft in this work. ... Phosphocalcic Cements and Glasses as a Bone Substitutes World Small Animal Veterinary Association World Congress Proceedings, ... The bone regeneration obtained with the four biomaterials at 12 weeks is equivalent to the bone neoformation generated for the ... A bone cavitary defect of 6 mm. of diameter was practice in the right distal femoral metaphyses of 60 New Zealand white rabbits ...
The Norwegian Arthroplasty Registry reported a decreased rate of infection with antibiotic-loaded cement (ABLC) in 22,700 THAs ... antibiotic-loaded cement has been recommended for prophylaxis, but its efficacy and cost-effectiveness remain controversial. ...
The medicinal cement precisely targets the infection site and delivers the antibiotic to the bone tissue through the bone ... New Antibiotic-infused Cement For Bones Created To Combat Infections The medicinal cement precisely targets the infection site ... The medicinal cement precisely targets the infection site and delivers the antibiotic to the bone tissue through the bone ... has only approved of bone cements loaded with antibiotics not originally developed for bone tissue," said principal ...
Dunne N, Orr J, Beverland D. Third generation bone cement mixing systems, are they doing the job? Journal of Bone and Joint ... Dunne, N, Orr, J & Beverland, D 2005, Third generation bone cement mixing systems, are they doing the job?, Journal of Bone ... Third generation bone cement mixing systems, are they doing the job? Journal of Bone and Joint Surgery Br Proceedings, 87-B, ... Third generation bone cement mixing systems, are they doing the job?. In: Journal of Bone and Joint Surgery Br Proceedings. ...
Refobacin Bone Cement R®).Eine In-vitro-Studie. Trotz deutlicher Verbesserungen der Materialien und Verankerungstechniken bei ...
If you were injured or a loved one died from bone cement in hip surgery, contact our lawyers for lawsuit info at (866) 920-0753 ... Do I have a Bone Cement Lawsuit?. The Schmidt Firm, PLLC is currently accepting bone cement induced injury cases in all 50 ... 41 Deaths Linked to Hip Surgery Bone Cement. June 17, 2014 - A study published in the British Medical Journal has linked the ... If you or somebody you know has been injured by bone cement in hip surgery, you should contact our lawyers immediately for a ...
Scientists develop self-healing bone cement Material scientists at the University of Jena have developed a bone replacement ... Onset of a minimally invasive era to set new possibilities for the bone cement industry Alice Ajit Mutum, of Future Market ... looks at the rapidly evolving products and technologies in the bone cement industry The emergence of personalised medicine and ... based on calcium phosphate cement and reinforced with carbon fibers. The fibers increase damage tolerance and ensure that ...
A Device to Control Implant and Bone-Cement Temperatures in Cemented Arthroplasty Antonio Completo, Antonio Completo ... A Device to Control Implant and Bone-Cement Temperatures in Cemented Arthroplasty J. Med. Devices (March,2012) ... to extract the heat generated in bone-cement, avoiding bone thermal necrosis. The efficiency of the device was evaluated by ... "A Device to Control Implant and Bone-Cement Temperatures in Cemented Arthroplasty." ASME. J. Med. Devices. June 2011; 5(2): ...
Buy the Bones Jordan 3 Black Cement Track pants here! ... Classic Bones premium poly track pant in black with cement ... Bones Double Stripe Track Pants Cement. Classic Bones premium poly track pant in black with cement strips to match the 2018 ... Buy the Bones Jordan 3 Black Cement track pants while they last! Grab this to complete the perfect Jordan 3 Black Cement outfit ...
To observe and analyse the effect of percutaneous penetration of bone cement augmentation on the treatment of osteoporotic ... compressive fracture and bone non-union and ex.. ... After mixing up the bone cement, proper amount of bone cement ... During the period of bone cement implantation, the bone cement dispersion process must be closely observed. Bone cement was ... Bone cement had the characteristics of improving bone rigidity and strength, and through applying bone cement strengthening ...
Why Buy this Bone Cement Mixers Market Report? - The report subtleties the worldwide Bone Cement Mixers market investigation ... Covid-19 Impact on Bone Cement Mixers Market:-. Bone Cement Mixers Market concentrate on report examinations the impact of ... Request a Sample Copy of the Bone Cement Mixers Market,, ... To get more details about the Bone Cement Mixers Market click here ,, ...
Video instruction on how the size of a bone cement sample influneces the peak temperature ...
Johnson on behalf of a woman who died during an unapproved bone cement trial. ... Synthes then promoted the bone cement for use in back operations. They had received reports and warnings that the bone cement ... in 1999 because it had a bone cement approved by the FDA for use on arm bones and portions of the skull. ... 13, 2003, during bone-cement trials, Lois L. Eskind had Synthess Norian SRS drug injected into her spine. The drug was mixed ...
Shop our Press Play 4x8 cement tiles or any of our solid color shapes and uniquely patterned cement tile designs. Zia ships ... SKU: N/A Categories: 4x8 rectangle, Cement Tile, patterned tile, Solid Tags: cement tile, encaustic tile, matte tile, patterned ... handmade cement tile and moroccan zellige. At Zia Tile, our goal is to deliver perfect handmade encaustic cement tile and ... Cement tiles are made by hand, one at a time, using mineral pigments, cement, a mold, and a hydraulic press. The individual ...
In this study, HA-containing acrylic bone cements were prepared and thermal and mechanical properties of the resultant cements ... Modification of Acrylic Bone Cements with Oxygen Plasma and Additives. Endoğan Tanır, Tuğba; Kızıltay, Aysel; Hasırcı, Vasıf ... Acrylic bone cements which are commonly used for the fixation of orthopedic prostheses, were prepared at different formulations ... Improvement of mechanical, thermal and biological properties of acrylic-based bone cements by adding various chemicals is a ...
... bone cement and evaluate its feasibility for clinical use. Daptomycin (0.5, 1, or 2g) was premixed with 40g of PMMA bone cement ... bone cement and evaluate its feasibility for clinical use. Daptomycin (0.5, 1, or 2g) was premixed with 40g of PMMA bone cement ... bone cement and evaluate its feasibility for clinical use. Daptomycin (0.5, 1, or 2g) was premixed with 40g of PMMA bone cement ... bone cement and evaluate its feasibility for clinical use. Daptomycin (0.5, 1, or 2g) was premixed with 40g of PMMA bone cement ...
Bone cement * Local anesthetics, with esters being more common causes of anaphylaxis than amides ... Ten Hagen A, Doldersum P, van Raaij T. Anaphylactic shock during cement implantation of a total hip arthroplasty in a patient ...
Simplex P bone cement with. *. Amphotericin B is released in very small amounts from antifungal-loaded bone cement ... Ceftazidime, 1 g or 4 g/40 g cement. *. Bioactivity of the two antibiotics in a proportion of 1 g antibiotic/40 g cement batch ... Fluconazole, 1 g or 4 g/40 g cement. *. Higher doses of fluconazole (4 g/40 g cement) covered patients against Candida albicans ... Table 3. Antifungal Impregnated Cement Spacers Study (Year). Study Type. Patients (No.). PJI Organism. Antifungal/Dose. Take ...
... bone cement to deliver a therapeutic radiation dose while simultaneously strengthening the bone, effectively creating a ... Additionally, P-32 is an ideal radionuclide for brachytherapy bone cement due to its clinically relevant half-life (14.3 days ... brachytherapy bone cement.. ​. The dose distributions from P-32 radioactive cement provide a unique capability to deliver a ... Finally, the uniformity of the P-32 distribution within brachytherapy bone cement was evaluated by calculating the standard ...
And, at the same time, to take account of the properties of at least three materials - bone, bone marrow and bone cement. To ... Step by step, few milliliters of bone cement are injected while repeatedly checking the spread of the bone cement by means of X ... the injected bone cement and the bone marrow, which fills the bone at the beginning. This enables the direct consideration of ... the injected bone cement and the bone marrow, which fills the bone at the beginning. This enables the direct consideration of ...
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Posts about cement dog statue written by Raud Kennedy ... Tag: cement dog statue. Brass Chihuahua. Published on January ... Image•Categories Ceramic Dog Sculpture, Dog Art•Tags arts and crafts, cement dog statue, Chihuahua, dog art, Dogs, outdoor dog ... Categories Ceramic Dog Sculpture, Dog Art•Tags arts and crafts, cement dog statue, Dogs, gifts for dog lovers, mold making, ... The blue tape is so the plaster can be removed in sections and then later placed around the rubber mold when casting cement. ...
  • Bone cement chemically is nothing more than Plexiglas (i.e. polymethyl methacrylate or PMMA). (
  • equilibration time on polymethyl methacrylate (PMMA) bone cement polymerization in joint replacement surgery. (
  • When replacing the patient's own bone is impossible, alternate strategies to close the cranial defects include covering the defect with a wide variety of materials such as titanium mesh, polymethyl methacrylate (PMMA) or hydroxyapatite. (
  • The set time can be tailored to help the physician safely apply the bone cement into the bone bed to either anchor metal or plastic prosthetic device to bone or used alone in the spine to treat osteoporotic compression fractures. (
  • We set the bar in 2009 with the release of VertaPlex HV bone cement, addressing specific viscosity and working time preferences for treating vertebral compression fractures. (
  • In 2015, VertaPlex HV bone cement became the first PMMA in the U.S. to receive 510(k) clearance for the fixation of pathological fractures of the sacral vertebral body or ala using sacral vertebroplasty or sacroplasty. (
  • According to the report by Expert Market Research (EMR), global bone cement market is growing at a CAGR of 6.1% between 2022 and 2027, aided by the heightening applications of bone cement in the healthcare industry to improve the recovery of patients from chronic fractures or bone injuries. (
  • Fractures such as kyphoplasty and arthroplasty are witnessing a surge, owing to the increasing geriatric population and ill-effects of busy and hectic lifestyles on bones. (
  • June 17, 2014 - A study published in the British Medical Journal has linked the use of bone cement , an optional product that repairs hip fractures, with at least 41 deaths in England and Wales. (
  • Subjects in the study were 60 cases of osteoporotic vertebral compression fractures with bone non-union in our hospital. (
  • Conservative treatments for osteoporotic vertebral compression fractures and bone non-union diseases included anti-osteoporosis drugs, analgesic drugs and bed rest and etc. [ 1 ]. (
  • This disease, which often occurs in old age, is called osteoporosis and can lead to massive restrictions in the stability of the entire skeleton and can be associated with a greatly increased risk of bone fractures. (
  • In the area of the spine, the weakening of the bone structure can lead to sintered fractures in the vertebral bodies and to serious complaints from those affected. (
  • Static and fatigue mechanical behavior of bone cement with elevated barium sulfate content for treatment of vertebral compression fractures. (
  • Leakage of cement in percutaneous transpedicular vertebroplasty for painful osteoporotic compression fractures. (
  • Adhesives used to fix prosthetic devices to bones and to cement bone to bone in difficult fractures. (
  • We offer kyphoplasty as a minimally invasive, image-guided treatment for fractures in the small bones supporting the backbone. (
  • To treat these osteoporatic and malignant verbetral compression fractures, our specially trained interventional radiologists use image guidance and a balloon to restore the bone to its original size and shape. (
  • We offer sacroplasty as a treatment for pain caused by fractures in the sacrum, the bone in your lower back. (
  • Prevention of infection in the treatment of one thousand and twenty-five open fractures of long bones: retrospective and prospective analysis. (
  • In the next few business days your Medtronic representative will reach out with information about Kyphon VuE™ bone cement for treating vertebral compression fractures (VCFs). (
  • Osteoporosis is a condition that causes bones to gradually thin and weaken, leaving them susceptible to fractures . (
  • Osteoporotic vertebral compression fractures (VCFs) are the most common medical condition experienced by those with osteoporosis or low bone mass. (
  • These often result from trauma in the form of skull fractures leading to bone loss or decompressive craniectomies to control raised intracranial pressure. (
  • Fractures of the bones surrounding the knee or tears of the knee ligaments may damage the articular cartilage over time, causing knee pain and limiting knee function. (
  • The goal of this in vitro study is to investigate the bacteriacidal and mechanical properties of daptomycin-incorporated polymethylmethacrylate (PMMA) bone cement and evaluate its feasibility for clinical use. (
  • Bulk properties and bioactivity assessment of porous polymethylmethacrylate cement loaded with calcium phosphates under simulated physi-ological conditions. (
  • Sec. 888.3027 Polymethylmethacrylate (PMMA) bone cement. (
  • Polymethylmethacrylate (PMMA) bone cement is a device intended to be implanted that is made from methylmethacrylate, polymethylmethacrylate, esters of methacrylic acid, or copolymers containing polymethylmethacrylate and polystyrene. (
  • The special control for this device is the FDA guidance document entitled "Class II Special Controls Guidance Document: Polymethylmethacrylate (PMMA) Bone Cement. (
  • Using polymethylmethacrylate (PMMA) bone cement, the researchers shortlisted molecules for antibiotic design and screened for drug-susceptible and drug-resistant bacteria in a preclinical model - all in all, the researchers managed to construct a computer-program-generated library of antibiotics, which pointed them to dual-action antibiotic VCD-077. (
  • Implants are most commonly held in place with a fast-curing bone cement (polymethylmethacrylate). (
  • This is necessary because the human hip is acted on by approximately 10-12 times the body weight and therefore the bone cement must absorb the forces acting on the hips to ensure that the artificial implant remains in place over the long term. (
  • To increase the cement-implant interface strength and simultaneously prevent the possibility of bone thermal necrosis, an automated electronic control device was designed to be use in cemented arthroplasties. (
  • The device is placed on the upper surface of the tibial tray during the cementing phase, to heating the tibial-tray in a first phase, promoting the polymerization which starts at the warmer cement-implant interface. (
  • The results showed that the use of the device increases the implant temperature at the initial bone-cement polymerization phase and reduces the maximum temperature of the cement in the subsequent polymerization process, preventing the effect of bone thermal necrosis. (
  • The lecture will cover a brief history of bone cement, its adaptation to dentistry and uses of bone cement in various clinical situations that include socket grafting, ridge augmentation and uses before and during implant surgery. (
  • The aim of this study was to determine whether local osteo-enhancement using a triphasic bone implant material improves the initial biomechanical properties of osteoporotic vertebra. (
  • The present case involved the placement of a monotype ceramic implant with concurrent guided bone regeneration using transgingival semi-submerged healing. (
  • In addition, even typical intraosseous bone defects arising around titanium implants as a result of peri-implant infections have successfully been treated using guided bone regeneration in combination with transmucosal healing (Mombelli and coworkers 2015). (
  • He says the method works well for hips because bone almost always grows into the implant and remains stable for a long time, but it's problematic for knees because limited local blood supply inhibits ingrowth. (
  • This type of fixation relies on new bone growing into the surface of the implant. (
  • Most are textured or coated so that the new bone actually grows into the surface of the implant. (
  • Antibiotics release from cement spacers used for two-stage treatment of implant-associated infections after total joint arthroplasty. (
  • He said the process consists of removing the diseased bone, placing the implant onto the knee and allowing the bone in the knee to grow into the implant coating. (
  • The implant becomes encapsulated with bone cement resulting in pain relief for the patient. (
  • Other international institutions identified these challenges and circumvented them by using the craniotomy bone intraoperatively to create a mirror implant with PMMA at the time of initial surgery, store it and autoclave when ready for implant. (
  • The range of stems allows the implant to be matched to the vast majority of bone sizes, thereby reproducing the natural hip architecture. (
  • Researchers from the University of British Columbia and McMaster University have developed what could be the bone implant material of the future: an airy, foamlike substance from plant cellulose that can be injected into the body and provide scaffolding for the growth of new bone. (
  • A small portion of the tibial bone is also removed to make room for the new tibial polyethylene implant. (
  • The polyethylene tibial implant is placed onto the prepared tibial bone. (
  • Cone-beam computed tomography was attempted in all patients for determining accurate implant location, status of bone, and other interrelated determinants of implant success. (
  • More recently bone cement has been used in the spine in either vertebroplasty or kyphoplasty procedures. (
  • Serious adverse events, some with fatal outcome, associated with the use of bone cements for vertebroplasty, kyphoplasty and sacroplasty include myocardial infarction, cardiac arrest, cerebrovascular accident, pulmonary embolism, and cardiac embolism. (
  • Vertebroplasty is a therapeutic treatment to stabilize osteoporotic vertebral bodies and represents a minimally invasive operation, in which so-called bone cement is injected percutaneously into the vertebral body and stabilizes it again after the previously liquid bone cement has hardened. (
  • The numerical simulation of vertebroplasty can help to avoid complications during the procedure and to make predictions about the spreading of the bone cement within the vertebral body. (
  • Another goal in simulating vertebroplasty is to gain a deeper understanding of the forces and pressures that arise within the vertebral body during bone cement injection. (
  • Mechanical efficacy of vertebroplasty Influence of cement type, BMD, fracture severity, and disc degeneration. (
  • Vertebroplasty has a low complication rate with most common complication being adjacent vertebral body fracture and rare complication due to extra-vertebral cement leakage causing nerve root compression or pulmonary embolism. (
  • We report a case of 55 year old lady with osteoporotic D12 wedge compression fracture subjected to vertebroplasty resulting in intraspinal cement leakage noticed intra-operatively. (
  • Intraspinal leakage of bone cement after vertebroplasty: A report of 3 cases. (
  • Prevalence of extravertebral cement leakage after vertebroplasty: procedural documentation versus CT detection. (
  • In vertebroplasty, bone cement is injected directly into the fractured vertebra. (
  • Mechanical tests demonstrated that fixation strengths of these prostheses with BA cement increased with time and were significantly greater than those with PMMA cement tested at any time. (
  • Acrylic bone cements which are commonly used for the fixation of orthopedic prostheses, were prepared at different formulations, by using either ground poly(methyl methacrylate) (PMMA) particles or homogeneously synthesized PMMA microspheres with application of plasma and addition of various ingredients in order to improve mechanical and thermal properties. (
  • The device is intended for use in arthroplastic procedures of the hip, knee, and other joints for the fixation of polymer or metallic prosthetic implants to living bone. (
  • Cemented fixation. (
  • In hybrid fixation for total knee replacement, a combination of cemented and cementless fixation is used. (
  • Once fixation has been achieved, the defect was filled with a cement spacer. (
  • Benson CD, Lansford T, Cotton J, Burton D, Jackson RS, McIff T. (2014) Biomechanical Analysis of Cement Augmentation Techniques on Pedicle Screw Fixation in Osteopenic Bone: A Cadaveric Study. (
  • The mode of stem fixation, whether fully cemented or hybrid, remains controversial. (
  • [ 3 ] Stable stem fixation is a crucial goal of rTKA and whether to choose cemented or press-fit stems remains controversial. (
  • This study reviewed the literature of the past 20 years, including the biomechanics of stem fixation, clinical results of the hybrid, and the fully cemented methods of stem fixation. (
  • We achieve this by providing solutions for the fixation of joint implants, driving infection management and by pioneering regenerative treatments for bone, cartilage and soft tissue. (
  • The device developed was specifically adapted for the knee arthroplasty, namely, for tibial-tray cementing. (
  • Antibiotic-loaded acrylic bone cement has been frequently used as an infection prophylaxis or antibiotic-loaded spacer in infected arthroplasty. (
  • Currently, cement viscosity's role in ensuring the long-term success of the arthroplasty is not clear. (
  • Average cement penetration was measured from radiographs of the constructs and analyzed according to the Knee Society Total Knee Arthroplasty Roentgenographic Evaluation System. (
  • The consistently superior performance of Simplex P suggests that cement viscosity does indeed play a role in arthroplasty success. (
  • Impregnation of vancomycin, gentamicin, and cefotaxime in a cement spacer for two-stage cementless reconstruction in infected total hip arthroplasty. (
  • Better survival of hybrid total knee arthroplasty compared to cemented arthroplasty. (
  • A knee replacement (also called knee arthroplasty) might be more accurately termed a knee "resurfacing" because only the surface of the bones are replaced. (
  • Stems are required during revision total knee arthroplasty to bypass damaged periarticular bone and transfer stress to healthier diaphyseal bone. (
  • The well-cemented total hip arthroplasty. (
  • The new calcium phosphate bone cement with load-bearing effect can perform self-repair function and promote the growth of new bone tissue. (
  • Development of an apatitic calcium phosphate bone cement is reported. (
  • Phosphoserine - a convenient compound for modification of calcium phosphate bone cement collagen composites. (
  • The animals were divided in five groups of 12 rabbits that received as implants α tricalcium phosphate cement (CH), monocalcium phosphate cement (CR), phosphate glass of P 2 O 5 -CaO-Na 2 O system (G0), phosphate glass of P 2 O 5 -CaO-Na 2 O-TiO 2 system (G5) and autologous bone (Control group). (
  • The radiological and histological studies demonstrated a correct osseointegration and substitution of the implants by new bone in all the animals. (
  • Synthes, a Johnson & Johnson subsidiary, manufactures medical devices for spinal procedures and implants for the treatment of damaged bones. (
  • To attach the implants to the bone, surgeons may use a special type of bone cement. (
  • This refers to using implants with a special coating that allows bone to grow onto it. (
  • The surgeon will then remove the damaged part of the joint and fix the implants to the bone. (
  • There are different ways to connect, or affix, knee implants to the bone. (
  • Implants can also be press-fit onto bone. (
  • Cementless implants are made of a material that attracts new bone growth. (
  • These three implants are cemented onto their respective bones. (
  • You use bone cement to cement the implants onto the bone. (
  • This guidance applies to implants (such as currently used metal, ceramic, or polymeric implants) and also to acrylic resin and other bone cements. (
  • (Right) The arthritic cartilage and underlying bone has been removed and resurfaced with metal implants on the femur and tibia. (
  • Using stemmed implants in rTKA is necessary to bypass the periarticular bone and transfer load to the stronger diaphyseal bone. (
  • It shields the nerves of the bones by cementing in metal implants and puts a plastic liner between them. (
  • Although previous investigations have found kyphoplasty to be an effective treatment for reducing patient pain and lowering cement-leakage risk, there have been reports of vertebral recollapse following the procedure. (
  • The following study documents a multiscale analysis capable of evaluating the risk of bone-cement interface separation during lying, standing, and walking activities following balloon kyphoplasty. (
  • The results of the multiscale analysis show it is essential for kyphoplasty simulations to take account of the micromechanical behavior of the bone-cement interface to be truly representative of the in vivo situation after the treatment. (
  • The results further illustrate the importance of ensuring adequate cement infiltration into the compacted bone periphery during kyphoplasty through a combination of new techniques, tools, and biomaterials in a multifaceted approach to solve this complex challenge. (
  • In kyphoplasty, a balloon is inserted into the fracture to expand the space before the cement is added. (
  • Radiographic findings showed no leakage of cemented bone. (
  • Possible serious consequences caused by cement leakage are an embolism or a compressing of the spinal cord. (
  • However, there are no reports discussing cement distribution and its morphology in the osteoporotic vertebral body, which is critical in the analysis of the biomechanical strength of the pedicle screw and the risk of cement leakage after pedicle screw augmentation. (
  • In this study, we used computed tomography (CT) to evaluate the cement distribution in the osteoporotic vertebral body after PMMA augmentation of a pedicle screw and to analyze the factors leading to cement leakage. (
  • The correlations among bone mineral density (BMD), the cement leakage rate, and cement distribution morphology were also analyzed. (
  • 0.6 g/cm(2) had significantly higher rates of cement leakage and tended toward a scattered cement distribution. (
  • There was only one patient who had a symptomatic leakage (sciatica) in Group B. We concluded that the cement distribution after pedicle screw augmentation with biopsy needle or cannulated screw technique was mostly localized in three zones of the vertebral body, and patients with lower BMD had a higher risk of cement leakage and scattered cement distribution. (
  • A further benefit of the balloon expansion process has been an associated reduction in the incidence of cement leakage due to the reduced injection pressure of cement into the cavity created by the balloon. (
  • BA cement was used in a few aged patients to install a hip prosthesis either in cases of revision or femoral neck fracture. (
  • To observe and analyse the effect of percutaneous penetration of bone cement augmentation on the treatment of osteoporotic compressive fracture and bone non-union and explore its safety. (
  • For the treatment of osteoporotic compression fracture and bone non-union, percutaneous targeted bone cement augmentation therapy can achieve relatively satisfactory results. (
  • This study was carried out to investigate the effect of percutaneous penetration of bone cement for enhancing the treatment of osteoporotic compressive fracture and bone nonunion, and the contents were shown below. (
  • Further complicating matters, normal radiation treatments for this problem can threaten the spinal cord and weaken the bones already compromised by the tumor's erosion, increasing the risk of fracture. (
  • Fracture in the adjacent levels is one of the consequences to the use of commercial poly methylmethacrylate (PMMA) bone cement. (
  • A recent review of osteoporotic therapies highlighted the potential benefits of using a new minimally invasive approach to address osteoporotic bone loss and reduce fracture risk [ 8 ]. (
  • Bone health also decreases with age, increasing the risk of hip fracture. (
  • A specially trained interventional radiologist injects medical cement into the sacrum fracture, which acts like an internal cast. (
  • Parikh K, Reinhardt D, Templeton K, Toby B , Brubacher J . (2021) Rate of Bone Mineral Density Testing and Subsequent Fracture-Free Interval After Distal Forearm Fracture in the Medicare Population. (
  • Previous studies with glass ionomer cements have revealed that the failure of cemented restoration occurs primarily due to fracture of the cement layer, indicating the inherent lack of strength of the cement [ 3 ]. (
  • The purpose of this study is to assess the safety and efficacy of CORTOSS for the treatment of osteoporotic vertebral compression fracture s as compared to commercially available PMMA bone cement via an FDA IDE pivotal, prospective, randomized clinical study. (
  • Among the inclusion criteria are a minimum VAS score of 50, a minimum ODI score of 30%, an osteoporotic compression fracture at one or two levels, presence of edema on MRI or bone scan and an informed patient consent. (
  • Our longer-term U.S. clinical development program is focused on our CORTOSS Synthetic Cortical Bone technology platform, which is designed for injections in osteoporotic spines to treat vertebral compression fracture s. (
  • Intercalary prosthetic replacement of the femur and total prosthetic replacement of the hip were performed in dogs using either PMMA cement or BA cement. (
  • A metal ball with a stem (a prosthesis) is inserted into the femur (thigh bone) and an artificial plastic cup socket is placed in the acetabulum (a "cup-shaped" part of the pelvis. (
  • The prosthesis may be fixed in the central core of the femur with methylmethacrylate cement. (
  • Background and purpose - There have been few comparative studies on total knee replacement (TKR) with cemented tibia and uncemented femur (hybrid TKR). (
  • The damaged cartilage surfaces at the ends of the femur and tibia are removed along with a small amount of underlying bone. (
  • If the majority of the joint is free from arthritis it may be possible to replace the back of the patella and the front of the femur (thigh bone) to provide relief. (
  • To treat large gaps in long bones, like the femur, which often can result in amputation, researched developed a process in a rodent model that partially recreates the bone growth process that occurs before birth. (
  • Cement is applied to the femur. (
  • The thigh bone is the femur, and the shin bone is the tibia. (
  • Group A consisted 25 osteoporotic patients (mean age of 73 years) with spinal instrumentation who had a total of 145 pedicle screws and cement augmentation with biopsy needles. (
  • Group B consisted of 23 osteoporotic patients (mean age of 74.6 years) with spinal instrumentation who had a total of 125 cannulated pedicle screws with cement augmentation. (
  • Modified PMMA with a reduced Young's modulus was found to be safer for cancellous bone augmentation procedures. (
  • Adapted Mechanical and Hardening Properties for the Use in Cancellous Bone Augmentation. (
  • Bone augmentation and regeneration in maxillofacial, orthopedic and trauma surgery for surgical reconstructions remains a challenge. (
  • Where natural healing processes are insufficient, enhanced bone augmentation by means of biomimetic scaffolds is needed. (
  • Techniques using different kinds of pedicle screws or methods of cement augmentation have been used to address this challenge, but are associated with difficult revisions and complications. (
  • Frankfurt, Germany, July 25, 2022 /OrthoSpineNews/ - curasan AG (Frankfurt, Germany), a pioneer and leading global provider of biomaterials for bone and tissue regeneration in dental and orthobiologic indications, broadens its product portfolio with CERASORB ® CPC (Calcium Phosphate Cement) Bone Void Fillers for maxillofacial, orthopedic and trauma surgery. (
  • Bioactive glass ionomer cements (GICs) have been in widespread use for ∼ 40 years in dentistry and medicine. (
  • With 125 million amalgam restorations carried out annually in Europe, the European Commission advocates atraumatic restorative treatment using mercury-free alternatives 2 , highlighting glass ionomer cements (GICs) ( Fig. 1a ) as an excellent option. (
  • Glass ionomer cements (GICs) are commonly used for cementation of indirect restorations. (
  • Among the various dental cements available in the market, resin cements and glass ionomer cements (GIC) are the most frequently used for cementation of the fixed partial dentures. (
  • However, the relatively low strength of glass ionomer cements compared to resin cements is regarded as one of their most significant limitations [ 2 ]. (
  • Most of the luting glass ionomer cements possess a compressive strength ranging between 80 MPa and 120 MPa, which compromises their adhesive property. (
  • Comprehensive clinical tests of the compatibility of bone cements with the body were conducted before their use in surgery. (
  • Bone cement is considered a reliable anchorage material with its ease of use in clinical practice and particularly because of its proven long survival rate with cemented-in prostheses. (
  • The bone-cement clinical trial was not approved by the U.S. Food and Drug Administration at the time. (
  • In addition to Eskind, two other patients died on the operating table during clinical trials of the bone cement being tested by Synthes. (
  • Following an investigation into the illegal use of Synthes's bone cement, four Synthes executives were charged in criminal cases for their roles in the unapproved clinical trials. (
  • Additionally, P-32 is an ideal radionuclide for brachytherapy bone cement due to its clinically relevant half-life (14.3 days), which is long enough to sustain its use from the time of manufacture to clinical implantation, yet short enough to deliver 94% of the total dose within 2 months. (
  • This product is widely considered as a breakthrough in composite bone cement, exhibiting great clinical potential. (
  • Calcium phosphate cements (CPC) have seen clinical success in many dental and orthopaedic applications in recent years. (
  • Reducing the particle size of the all-ceramic powders may help in decreasing the film thickness, which is an essential parameter for the clinical performance of any luting cement. (
  • A cemented restoration's clinical performance depends upon two important factors, namely, structural integrity of the cement layer and quality of the adhesive bond. (
  • From a clinical perspective, the results indicate that aggressive cutting at higher blade speed and greater thrust force results in lower temperatures in the surrounding bone. (
  • The composition of these types of cement is mostly based on calcium phosphate and more recently magnesium phosphate. (
  • A novel biodegradable, non-exothermic, self-setting orthopedic cement composition based on amorphous magnesium phosphate (AMP) was developed. (
  • Calcium phosphate based cements and glasses are biomaterials that possess interesting biological properties that can be potentially employed as a bone substitutes. (
  • Calcium phosphate based cements and glasses are osteoconductive, biocompatible and biodegradable materials that behave as a bone substitutes in the cavitary defects in the experimentation animal. (
  • Material scientists at the University of Jena have developed a bone replacement based on calcium phosphate cement and reinforced with carbon fibers. (
  • The feasibility of using doxorubicin-loaded calcium phosphate cement (CPC) as a new material, which can release the drug as well as fill a postoperative bony defect, was investigated. (
  • curasan AG broadens orthobiologic portfolio with the launch of CERASORB® CPC (Calcium Phosphate Cement) bone void fillers. (
  • CERASORB ® CPC is a synthetic, biocompatible, osteoconductive and bioresorbable mineral bone cement composed of calcium and phosphate salts finely dispersed in a biocompatible oil phase made from plant-based raw materials and emulsifiers for filling non-load-bearing and non-infected bone defects. (
  • A calcium phosphate - hydroxyapatite (HA) bone cement was loaded with varying concentrations of tobramycin and vancomycin and the elution properties of these antibiotics were evaluated. (
  • A mixture of monocalcium phosphate, monohydrate, alpha-tricalcium phosphate, and calcium carbonate with a sodium phosphate solution is also a useful bone paste. (
  • 100 μ Particles of tetracalcium phosphate (TTCP) and dicalcium phosphate dihydrate (DCPD) were mixed in equimolar ratio to form the cement powder. (
  • Resorbable calcium phosphate based bone void fillers should work as temporary templates for new bone formation. (
  • Calcium phosphate cements are used as synthetic bone grafts, with several advantages, such as their osteoconductivity and injectability. (
  • Available in injectable form, bone cement is minimally invasive and poses low risk of bone damage which makes it unique and reliable. (
  • Brachytherapy cement could be used without delay in a convenient, one-step, minimally invasive treatment to irradiate tumors," UCI's Joyce Keyak says. (
  • Brachytherapy cement could be used without delay in a convenient, one-step, minimally invasive treatment to irradiate tumors," Keyak said, "and would not irradiate the spinal cord or limit future treatment options. (
  • CERASORB ® CPC is designed for use in open and minimally invasive applications, thus can be applied directly to the bone defect from the syringe or with a cannula without any further preparation. (
  • The researchers are banking on a future tissue-specific, localised treatment, such as a minimally-invasive injection of antibiotic-infused bone cement, that does its job without perpetuating drug resistance. (
  • Classic Bones premium poly track pant in black with cement strips to match the 2018 BC3s! (
  • Cementless and cemented stem options for different intramedullary anatomies and bone qualities (Surgical technique Lit. (
  • Bone cements consist of a powder (i.e., pre-polymerized PMMA and or PMMA or MMA co-polymer beads and or amorphous powder, radio-opacifier, initiator) and a liquid (MMA monomer, stabilizer, inhibitor). (
  • This paper is a summary of already published papers on the bioactive bone cement (BA cement) which consists of CaO-SiO2-P2O5-MgO-CaF2 (AW glass-ceramic) powder and bisphenol-a-glycidyl methacrylate (Bis-GMA) resin. (
  • Daptomycin (0.5, 1, or 2g) was premixed with 40g of PMMA bone cement powder before curing. (
  • Incorporation of a poragen, such as dextrose, glycine, or particulate xylitol, into the cement powder has been shown to be an effective way to increase daptomycin release rate. (
  • A bone cement, in powder or liquid form, is used to affix protheses or artificial joints tightly to the bone. (
  • The cement powder, on wetting with the medium, formed a workable putty. (
  • Experimental GICs were prepared by adding different concentrations of two all-ceramic powders (5%, 10, and 15% by weight) to the powder of the glass ionomer luting cements, and their setting time, film thickness, and compressive strength were determined. (
  • There was a significant increase in the setting time at this concentration, but it was within the limit specified by ISO 9917-1:2007 specifications for powder/liquid acid-base dental cements. (
  • Artificial joints (referred to as prostheses) are anchored with bone cement. (
  • The excellent tissue compatibility of PMMA allowed bone cements to be used for anchorage of head prostheses in the 1950s. (
  • What Sir John did was to replace the uncomfortable, noisy stainless steel and screws in the then-available hip prostheses with polyethylene and dental cement. (
  • Bone Cement Mixers Market Growth (Status and Outlook) 2021-2031 offers a complete research study of the market that includes accurate forecasts and analysis at global, regional, and country levels. (
  • Readers are provided with actual market figures related to the size of the global Bone Cement Mixers market in terms of value and volume for the forecast period 2021-2031. (
  • Franken, SM & Rustemeyer, T 2021, ' Bullous pemphigoid caused by contact allergy to bone cement: A case report ', Contact Dermatitis , vol. 84, no. 6, pp. 457-458. (
  • 2021) Elution of rifampin and vancomycin from a weight-bearing silorane-based bone cement. (
  • Meng B, Bunch J , Burton D, Wang J . (2021) Lumbar interbody fusion: recent advances in surgical techniques and bone healing strategies. (
  • Apr 29, 2021· The Madras High Court on Wendesday directed a Central Bureau of Investigation (CBI) enquiry into allegations that cement manufacturers in the country have conspired to cartelize the cement industry, by creating artificial scarcities and fixing higher prices (Class I Contractor Welfare Association - Mangadu v.CBI and anr). (
  • Results of histological examinations showed direct bonding between BA cement and bone, and that the bone trabeculae around BA cement mantle grew with time, while with PMMA cement an intervening soft tissue layer was always observed at the cement-bone interface. (
  • The medicinal cement precisely targets the infection site and delivers the antibiotic to the bone tissue through the bone cement. (
  • Currently, the Food and Drug Administration (FDA) has only approved of bone cements loaded with antibiotics not originally developed for bone tissue," said principal investigator Dr. Hae Lin Jang, co-director of the Brigham's Center for Engineered Therapeutics. (
  • In addition to not being bone tissue-specific, resistance has emerged against these antibiotics. (
  • Nonetheless, they think the future is bright for tissue-specific localized treatments, such as bone infections that minimize invasiveness. (
  • The human skeleton goes through a lifelong process called bone tissue remodelling, in which mature bone tissue is removed and replaced by newly formed tissue. (
  • If this process is no longer in equilibrium and bone tissue does not grow in sufficient quantities, it will lead to bone shrinkage and a decrease of bone density. (
  • These results indicate that doxorubicin-loaded CPC may be useful in the local treatment of malignant bone and soft tissue tumors. (
  • curasan develops, manufactures and markets biomaterials and medical devices in the field of bone and tissue regeneration, wound healing and osteoarthritis therapy. (
  • Materials based on biodegradable polyesters, such as poly(butylene terephthalate) (PBT) or poly(butylene terephthalate- co -poly(alkylene glycol) terephthalate) (PBTAT), have potential application as pro-regenerative scaffolds for bone tissue engineering. (
  • Today's article testimonials the main new advancements in CPC digesting technologies lately and targets novel biological connections of CPCs, especially in the context of stem cell delivery and responses aswell simply because bone tissue regeneration. (
  • In children, it typically presents as a painless, firm, possibly rapidly enlarging mass, fixed to underlying bone and soft tissue. (
  • Discovery of broad-spectrum antibiotics, a better understanding of bone and soft tissue healing, and extraordinary tolerance of well-vascularized face tissues to alloplastic materials contribute to revenue growth of the market. (
  • Hydroxyapatite foams are potential synthetic bone grafting materials or scaffolds for bone tissue engineering. (
  • Electrospun scaffolds have been studied extensively for their potential use in bone tissue engineering. (
  • The results suggested that the construction of a bioactive interface by LbL assembly using αFeNPs on traditional scaffolds should be a promising method for bone tissue engineering. (
  • Stem cells and scaffolds are two key factors in bone tissue engineering. (
  • 6 In bone tissue engineering, the osteoinduction of stem cells on electrospun scaffolds is crucial for final bone regeneration effects. (
  • 2007) issue is currently an existing problem of more surgeons even in regard to the fact that the bone tissue is compact and living material (Kato et al. (
  • Researchers in Oregon have engineered a material that replicates human bone tissue with an unprecedented level of precision, from its microscopic crystal structure to its biological activity. (
  • Medical terms for different types of pain include nociceptive (stemming from the bones or soft tissue), neuropathic (based in nerves, such as from nerve compression or damage), and sympathetic (involving organs and body cavities). (
  • Our products are used in the regeneration of bone and soft tissue. (
  • Four hours later Anna and James received a call to say Burtie's stomach had been ruptured by the bone and that despite the vets' best efforts there was not enough healthy stomach tissue to keep Burtie alive. (
  • Among these additives, hydroxyapatite (HA) is proven to be a biocompatible and osteoconductive material and it strongly integrates with bone. (
  • Acrylic cements with different compositions were prepared by mixing the solid part (composed of poly(methyl methacrylate), PMMA, and benzoyl peroxide, BPO) and the liquid part (composed of methyl methacrylate, MMA, and N,N-dimethyl-p-toluidine, DMPT), modified by addition of hydroxyapatite (HA) and ammonium nitrate (AN) and characterized by measuring thermal and mechanical properties. (
  • The aim of this research was to study the effect of adding hydroxyapatite (HA) nano-particles and acetone on different properties of PMMA cement. (
  • Characterization of Bone Cements Prepared with either Hydroxyapatite, α-TCP or Bovine Bone. (
  • The characteristics of a hydroxyapatite-chitosan-PMMA bone cement. (
  • For total shoulder replacement, the round end of your arm bone will be replaced with an artificial stem that has a rounded metal head (ball). (
  • For additional stability, the metal portion of the component may have a stem that inserts into the center of the tibia bone. (
  • Some allografts are mixed with bone forming cells such as stem cells. (
  • The bone specific stem cells found in bone marrow help bone grow and heal. (
  • University of California, Irvine researchers have developed and tested on mice a therapeutic treatment that uses engineered stem cells to target and kill cancer bone metastases while preserving the bone. (
  • This is held into place in the same method as the femoral stem, using cemented or uncemented techniques. (
  • The socket is then placed on the arm side where it is supported by a metal stem in the arm bone (the humerus) (Figure 4). (
  • The bone cement viscosity changes over time from a runny liquid into a dough like state that can be safely applied and then finally hardens into solid hardened material. (
  • While the individual components are not always perfectly safe as pharmaceutical additives and active substances per se, as bone cement the individual substances are either converted or fully enclosed in the cement matrix during the polymerization phase from the increase in viscosity to curing. (
  • VertaPlex HV bone cement is a high viscosity bone cement that contributes to a controlled interdigitation and fill. (
  • VertaPlex HV Cement reaches a thick viscosity as soon as it's mixed and maintains viscosity for an average of 18 minutes 1 , giving physicians more working time. (
  • This enables the direct consideration of important parameters such as the bone cement viscosity and the anisotropic permeability of the bone structure in the vertebra. (
  • The three cements (Depuy 2, Palacos R (fast setting, high viscosity cements) and Simplex P, (medium setting, a low viscosity cement)) were used to prepare the tibial constructs using standard TKA procedures. (
  • In total knee replacement, damaged bone and cartilage are removed and replaced with metal components that recreate the surface of the joint. (
  • As the cartilage wears out, arthritis develops as the bone ends rub against each other and cause pain. (
  • The ends of these three bones are covered with articular cartilage, a smooth substance that protects the bones and enables them to move easily within the joint. (
  • The cartilage that cushions the bones of the knee softens and wears away. (
  • First, your surgeon removes damaged cartilage and bone. (
  • A smooth layer of cartilage and a thick lubricant called synovial fluid form a thin layer between the ball and socket, ensuring that the bones are able to move in a nearly frictionless environment. (
  • Shoulder replacements are designed to remove portions of the bones of the shoulder joint that are arthritic (missing cartilage). (
  • Articular cartilage is the smooth, white material that covers the ends of bones in most joints. (
  • Articular cartilage provides a slick, rubbery surface that allows the bones to glide over each other as they move. (
  • On the ends of the bones is a wonderful substance called hyaline cartilage. (
  • Over time, the hyaline cartilage wears out, and more pressure is delivered to the bones, which are full of nerves. (
  • At $17,434.44 in 2017, the country was number 65 among other countries in Export of Dental Cements and Other Dental Fillings, Bone Reconstruction Cements. (
  • Contemporary dental cements to meet the challenges of today's restorative dentistry. (
  • The results showed that the compressive strength, of PMMA bone cement, which was higher than 100 MPa in all groups, was sufficient according to ISO 5833 after incorporation of daptomycin. (
  • Therefore, we believe that daptomycin can be locally delivered from PMMA bone cement at the surgical site as a prophylactic or treatment for osteomyelitis against Gram-positive organisms with intact cement function. (
  • It was concluded that HA and acetone can be used to reduce the stiffness and residual monomer with enhanced biocompatibility of the commercial PMMA bone cement. (
  • VCD-077 not only exhibited desired drug release kinetics without affecting the stability of PMMA bone cement, but it also demonstrated high efficacy against a broad range of drug-resistant bacteria strands and slowed development of future resistance. (
  • In experiments, VCD-077-loaded PMMA bone cement exhibited greater efficacy than all currently used antibiotic-loaded bone cements against bacterial bone infections in a rat model. (
  • The preliminary results suggest that CORTOSS, with much lower injection volume per treated vertebra, may provide similar pain relief compared to PMMA bone cement," said Dr. Bae. (
  • Finally, the uniformity of the P-32 distribution within brachytherapy bone cement was evaluated by calculating the standard deviation (as a percentage of the mean) of the dose rate along three straight lines along the axis of a long tube filled with radioactive cement. (
  • The brachytherapy bone cement does not have the same side effects as traditional radiation therapy, Keyak noted, because the injection directly targets the tumor and radiation doesn't pass through other organs, such as the intestines or stomach. (
  • But with the brachytherapy bone cement, Keyak said, a single injection can provide an equivalent, targeted tumor treatment with significantly less threat to the spinal cord and nerves. (
  • It is extensively used in the medical field to improve the outcomes of orthopaedic and trauma surgeries by filling up irregular surfaces of bones. (
  • As a pioneer and global technology leader in the growing field of regenerative medicine, curasan is specialized primarily on biomimetic bone grafting materials for dental, oral/maxillofacial, orthopaedic and spinal applications, i.e. materials mimicking biological structures. (
  • Researchers from Brigham and Women's Hospital (BWH) have developed a novel bone cement matrix loaded with antibiotics to treat bone infections common in post-surgical orthopaedic procedures, such as knee replacement surgery. (
  • In addition, given the increasing aging population who most likely require orthopaedic procedures, it is now more necessary than ever to have effective antibiotic for targeted use in a bone cement matrix. (
  • Collaborating researchers from the BWH's Department of Medicine and the Department of Orthopaedic Surgery thus aimed to engineer a new antibiotic for specific local delivery via a bone cement matrix. (
  • PMMA or bone cement, as it is known in the orthopaedic realm, is readily available and cost effective and thus an attractive option to fill cranial vault defects. (
  • What is referred to as bone cement implantation syndrome (BCIS) is described in the literature. (
  • Researchers have been warning about the risks of bone cement since 2009, when the National Patient Safety Agency (NPSA) found that it could cause bone cement implantation syndrome (BCIS). (
  • Dr. Casabianca frequently treats Bone Cement Implantation Syndrome, Bone Grafting, and Cavity. (
  • What is the cost-effectiveness profile of TJA performed with bone cement that contains antibiotics? (
  • Researchers from @BrighamWomens constructed a computer-generated library of #antibiotics to identify an effective antibiotic for targeted use in a bone cement matrix. (
  • Sadly, patients with antibiotic bone cements are becoming increasingly resistant to the antibiotics and also sustain damage to beneficial microbiota, which might help them beat bacterial infection, for example. (
  • Alternative materials to acrylic bone cement for delivery of depot antibiotics in orthopedics infection. (
  • Variation in cement tile and zellige is the point! (
  • All cement tile and zellige sample orders are limited to up to 4 per tile design, and customers may order up to 10 samples total. (
  • Some cement tile and zellige tile samples of special order tiles may be available and are limited to 1 sample per customer due to the limited amount of special order tile samples we have on-hand. (
  • Two formulations of bone cements and two bioactive glasses were compared with the fresh cancellous bone autograft in this work. (
  • Treatment of giant-cell tumors of long bones with curettage and bone-grafting. (
  • The bone regeneration obtained with the four biomaterials at 12 weeks is equivalent to the bone neoformation generated for the autologous bone graft. (
  • Often the minerals and cells are washout from the donor bone leaving demineralized bone matrix (DBM), which is used for the graft. (
  • The bone is also treated before it is used as a graft. (
  • The risk of getting a disease from bone graft is extremely low. (
  • Apart from grafts from a bone bank or your own body, there are also artificial bone graft materials that can be used. (
  • A graft is inserted to fuse together the bones above and below the disc. (
  • Contact killing antimicrobial acrylic bone cements: preparation and characterization. (
  • 3. Creation of osteoinductive microenvironments using injectable, photocrosslinkable composite bone cements. (
  • Effect of modification degree of nanohydroxyapatite on biocompatibility and mechanical property of injectable poly (methyl methacrylate)-based bone cement. (
  • A bone cavitary defect of 6 mm. of diameter was practice in the right distal femoral metaphyses of 60 New Zealand white rabbits. (
  • Designed for proximal femoral elevation in total hip replacement or in other surgery with a similar need for bone manipulation. (
  • A small amount of bone is removed from the damaged, arthritic area of the femoral condyle. (
  • Cancers that begin in the breast, prostate, lung, thyroid, kidney and other locations can spread to and erode bones, most commonly in the spine. (
  • Synthetic resins are commonly used as cements. (
  • In this study, HA-containing acrylic bone cements were prepared and thermal and mechanical properties of the resultant cements were examined. (
  • The mechanical properties of the daptomycin-loaded acrylic bone cement (DLABC) were estimated following standard guidance, and the release profile and kinetics of daptomycin from PMMA were analyzed. (
  • The depot administration of penicillin G and gentamicin in acrylic bone cement. (
  • the main body being adapted to be covered with a layer (S) of a coating material or a material including acrylic bone cement added or that can be added with one or a plurality of pharmaceutical products or active and/or therapeutic substances. (
  • The bone cement fills the free space between the prosthesis and the bone and plays the important role of an elastic zone. (
  • This low polymerization temperature is determined by the relatively thin cement coating, which should not exceed 5 mm, and the temperature dissipation via the large prosthesis surface and the flow of blood. (
  • Fortunately the reverse prosthesis can be put into place with screws on the socket side which hold it into the bone of the shoulder blade (Figures 3 and 4). (
  • The part of the prosthesis placed into the arm bone is secured with cement which bonds the metal to the bone within a few minutes (Figure 4). (
  • The cement distribution in the vertebrae was divided into four zones in the axial CT view: anterior one-third, middle third, and posterior third of vertebral body, and the pedicle. (
  • These bones act as the "cement" that fuses the vertebrae together. (
  • The spine is a column of small bones, or vertebrae, that support the entire upper body. (
  • The cervical (C) vertebrae are the 7 spinal bones that support the neck. (
  • The thoracic (T) vertebrae are the 12 spinal bones that connect to the rib cage. (
  • The lumbar (L) vertebrae are the 5 lowest and largest bones of the spinal column. (
  • At the end of the sacrum are 2 to 4 tiny, partially fused vertebrae known as the coccyx , or "tail bone. (
  • Bone cements have been used very successfully to anchor artificial joints (hip joints, knee joints, shoulder and elbow joints) for more than half a century. (
  • Hip and knee registers for artificial joint replacements such as those in Sweden and Norway clearly demonstrate the advantages of cemented-in anchorage. (
  • A new antibiotic -infused cement for bones has been created to combat infections and could revolutionize hip and knee replacements. (
  • It is grooved so the kneecap can move up and down smoothly against the bone as the knee bends and straightens. (
  • In reality, the knee is much more complex because the bone surfaces actually roll and glide as the knee bends. (
  • Most knee replacements done in the U.S. use cemented knees. (
  • Now you're eliminating one area where a total knee replacement can fail," he said, "which is the bone cement interface. (
  • The bones then rub against one another, causing knee pain and stiffness. (
  • There are three weight bearing bones in the knee. (
  • Nine groups of antibiotic loaded cement cylinders (N = 6 in each group) were prepared and placed in saline for 28 days. (
  • The dose distributions from P-32 radioactive cement provide a unique capability to deliver a highly localized dose to tumor-involved bone with minimal exposure to nearby radiosensitive tissues such as the spinal cord and nerves. (
  • The steepness of the dose drop-off from P-32 radioactive cement would be difficult or impossible to achieve with a gamma-emitting radionuclide, which would produce emissions that would penetrate through the vertebra and irradiate the spinal cord and nerves. (
  • The study shows that this brachytherapy cement can be placed into spinal bones to directly irradiate tumors without harming the spinal cord, and the radioactive material will stay localized in the bones, which promises to virtually eliminate side effects. (
  • And you can do it when tumors are smaller to prevent further bone and spinal cord damage, while limiting the pain and side effects that patients often feel. (
  • The presence of bone in the spinal canal or of a circumferential epidural tumor limits the success of management with radiation therapy alone. (
  • All patients had CT evaluation of the cement distribution in the vertebral body after the surgery. (
  • Optimization of the cement was done by manipulating the accelerator concentration so that the setting time, hardening time and the compressive strength had clinically relevant values. (
  • [ 1 , 26 ] Future research and modification of RANK ligand (RANKL) is expected to produce additional substances that can further arrest or retard bone destruction by metastatic disease. (
  • Literature reports with a clinically relevant medium-dose daptomycin-loaded cement show that the daptomycin release rate from cylindrical specimens is low. (
  • There are, however, no studies on modeling of daptomycin release from specimens of either a daptomycin-loaded cement or a daptomycin-poragen-loaded cement. (
  • discovery of Portland cement, the key ingredient used in concretes today. (
  • Cement is added to the tibia. (
  • One way to describe the meniscus is to say that it's C-shaped, connected to the tibia with two anchors near the center of the bone and connected to the surrounding capsule. (
  • On Jan. 13, 2003, during bone-cement trials, Lois L. Eskind had Synthes's Norian SRS drug injected into her spine. (
  • To fuse the spine, very small pieces of extra bone are needed, which are called bone grafts. (
  • Degenerative disc disease affects the discs that separate the spine bones. (
  • It's caused by degenerative changes to the joints between the spine bones. (
  • The patient's bone releases fat and marrow into the bloodstream, which can clog arteries in the lungs, causing a pulmonary embolism. (
  • The employed continuum mechanical model is based on the Theory of Porous Media (TPM) and relies on the formulation of constitutive relations for the solid skeleton of the bone, the injected bone cement and the bone marrow, which fills the bone at the beginning. (
  • Bone marrow cells taken from your own body may also be used together with one of the above choices. (
  • Bone marrow cancer is currently an incurable disease that affects about 400 people in Norway every year. (
  • A researcher at The University of Texas at Arlington has found that blood vessels within bone marrow may progressively convert into bone with advancing age. (
  • A constellation of bone marrow failure, pulmonary fibrosis, liver cirrhosis and premature greying is suggestive, however incomplete penetrance results in highly variable manifestations, with idiopathic pulmonary fibrosis as the most common presentation. (
  • Clinically, however, it seems that the beneficial effect of porosity reduction of cement around total hip replacement components can only be found in large follow-up studies. (
  • The efficiency of the device was evaluated by cementing several tibial-trays in bovine fresh bone and by measuring the tray and cement temperatures. (
  • For this, a small amount of bone cement is placed between the plates of the rheometer and subjected to oscillations with gradually increasing angular frequency upto 40 rad/s. (
  • If bone from your own body is used, a small amount of bone is taken from a part of your pelvic bone, called the iliac crest. (
  • A commercially available bone cement (Vertecem V+) is subjected to an oscillometric test using a parallel plate rheomter in order to characterise its viscoelastic properties. (
  • The primary focus of our study was to enhance the mechanical properties of glass ionomer luting cement meant for cementation of permanent restorations. (