Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.
The plan and delineation of prostheses in general or a specific prosthesis.
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.
Prostheses used to partially or totally replace a human or animal joint. (from UMDNS, 1999)
Replacement for a knee joint.
Replacement for a hip joint.
Rigid, semi-rigid, or inflatable cylindric hydraulic devices, with either combined or separate reservoir and pumping systems, implanted for the surgical treatment of organic ERECTILE DYSFUNCTION.
A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.
A heterogeneous condition in which the heart is unable to pump out sufficient blood to meet the metabolic need of the body. Heart failure can be caused by structural defects, functional abnormalities (VENTRICULAR DYSFUNCTION), or a sudden overload beyond its capacity. Chronic heart failure is more common than acute heart failure which results from sudden insult to cardiac function, such as MYOCARDIAL INFARCTION.
Prosthetic replacements for arms, legs, and parts thereof.
Artificial device such as an externally-worn camera attached to a stimulator on the RETINA, OPTIC NERVE, or VISUAL CORTEX, intended to restore or amplify vision.
Surgical insertion of a prosthesis.
The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed)
Medical devices which substitute for a nervous system function by electrically stimulating the nerves directly and monitoring the response to the electrical stimulation.
An implant used to replace one or more of the ear ossicles. They are usually made of plastic, Gelfoam, ceramic, or stainless steel.
An artificial replacement for one or more natural teeth or part of a tooth, or associated structures, ranging from a portion of a tooth to a complete denture. The dental prosthesis is used for cosmetic or functional reasons, or both. DENTURES and specific types of dentures are also available. (From Boucher's Clinical Dental Terminology, 4th ed, p244 & Jablonski, Dictionary of Dentistry, 1992, p643)
A prosthesis that gains its support, stability, and retention from a substructure that is implanted under the soft tissues of the basal seat of the device and is in contact with bone. (From Boucher's Clinical Dental Terminology, 4th ed)
Surgical insertion of synthetic material to repair injured or diseased heart valves.
A measure of the quality of health care by assessment of unsuccessful results of management and procedures used in combating disease, in individual cases or series.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
A prosthetic appliance for the replacement of areas of the maxilla, mandible, and face, missing as a result of deformity, disease, injury, or surgery. When the prosthesis replaces portions of the mandible only, it is referred to as MANDIBULAR PROSTHESIS.
A device, activated electronically or by expired pulmonary air, which simulates laryngeal activity and enables a laryngectomized person to speak. Examples of the pneumatic mechanical device are the Tokyo and Van Hunen artificial larynges. Electronic devices include the Western Electric electrolarynx, Tait oral vibrator, Cooper-Rand electrolarynx and the Ticchioni pipe.
Partial or total replacement of a joint.
A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)
Surgical insertion of cylindric hydraulic devices for the treatment of organic ERECTILE DYSFUNCTION.
Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
Acquiring information from a patient on past medical conditions and treatments.
Presentation of pertinent data by one with special skill or knowledge representing mastery of a particular subject.
A synovial hinge connection formed between the bones of the FEMUR; TIBIA; and PATELLA.
Replacement of the knee joint.
An alloy of 60% cobalt, 20% chromium, 5% molybdenum, and traces of other substances. It is used in dentures, certain surgical appliances, prostheses, implants, and instruments.
A partial denture attached to prepared natural teeth, roots, or implants by cementation.
The use of a layer of tooth-colored material, usually porcelain or acrylic resin, applied to the surface of natural teeth, crowns, or pontics by fusion, cementation, or mechanical retention.
Natural teeth or teeth roots used as anchorage for a fixed or removable denture or other prosthesis (such as an implant) serving the same purpose.
Zirconium. A rather rare metallic element, atomic number 40, atomic weight 91.22, symbol Zr. (From Dorland, 28th ed)
The plan and delineation of dental prostheses in general or a specific dental prosthesis. It does not include DENTURE DESIGN. The framework usually consists of metal.
All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.
A publication issued at stated, more or less regular, intervals.
A bibliographic database that includes MEDLINE as its primary subset. It is produced by the National Center for Biotechnology Information (NCBI), part of the NATIONAL LIBRARY OF MEDICINE. PubMed, which is searchable through NLM's Web site, also includes access to additional citations to selected life sciences journals not in MEDLINE, and links to other resources such as the full-text of articles at participating publishers' Web sites, NCBI's molecular biology databases, and PubMed Central.
Lists of persons or organizations, systematically arranged, usually in alphabetic or classed order, giving address, affiliations, etc., for individuals, and giving address, officers, functions, and similar data for organizations. (ALA Glossary of Library and Information Science, 1983)
"The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.
Publications in any medium issued in successive parts bearing numerical or chronological designations and intended to be continued indefinitely. (ALA Glossary of Library and Information Science, 1983, p203)
A central nervous system stimulant and sympathomimetic with actions and uses similar to those of DEXTROAMPHETAMINE. It has been used most frequently in the treatment of obesity.
A long-acting dopamine agonist which has been used to treat PARKINSON DISEASE and HYPERPROLACTINEMIA but withdrawn from some markets due to potential for HEART VALVE DISEASES.
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.
Endogenous compounds and drugs that specifically stimulate SEROTONIN 5-HT2 RECEPTORS. Included under this heading are agonists for one or more of the specific 5-HT2 receptor subtypes.
A centrally active drug that apparently both blocks serotonin uptake and provokes transport-mediated serotonin release.
The articulation between the head of the HUMERUS and the glenoid cavity of the SCAPULA.
Also called the shoulder blade, it is a flat triangular bone, a pair of which form the back part of the shoulder girdle.
A depression in the lateral angle of the scapula that articulates with the head of the HUMERUS.

Radiolucent lines and component stability in knee arthroplasty. Standard versus fluoroscopically-assisted radiographs. (1/2728)

The radiolucent lines and the stability of the components of 66 knee arthroplasties were assessed by six orthopaedic surgeons on conventional anteroposterior and lateral radiographs and on fluoroscopic views which had been taken on the same day. The examiners were blinded as to the patients and clinical results. The interpretation of the radiographs was repeated after five months. On fluoroscopically-assisted radiographs four of the six examiners identified significantly more radiolucent lines for the femoral component (p < 0.05) and one significantly more for the tibial implant. Five examiners rated more femoral components as radiologically loose on fluoroscopically-assisted radiographs (p = 0.0008 to 0.0154), but none did so for the tibial components. The mean intra- and interobserver kappa values were higher for fluoroscopically-assisted radiographs for both components. We have shown that fluoroscopically-assisted radiographs allow more reproducible, and therefore reliable, detection of radiolucent lines in total knee arthroplasty. Assessment of the stability of the components is significantly influenced by the radiological technique used. Conventional radiographs are not adequate for evaluation of the stability of total knee arthroplasty and should be replaced by fluoroscopically-assisted films.  (+info)

Analysis of 118 second-generation metal-on-metal retrieved hip implants. (2/2728)

Osteolysis is due to particulate wear debris and is responsible for the long-term failure of total hip replacements. It has stimulated the development of alternative joint surfaces such as metal-on-metal or ceramic-on-ceramic implants. Since 1988 the second-generation metal-on-metal implant Metasul has been used in over 60 000 hips. Analysis of 118 retrieved specimens of the head or cup showed rates of wear of approximately 25 microm for the whole articulation per year in the first year, decreasing to about 5 microm per year after the third. Metal surfaces have a 'self-polishing' capacity. Scratches are worn out by further joint movement. Volumetric wear was decreased some 60-fold compared with that of metal-on-polyethylene implants, suggesting that second-generation metal-on-metal prostheses may considerably reduce osteolysis.  (+info)

Migration of the Duraloc cup at two years. (3/2728)

We carried out 71 primary total hip arthroplasties using porous-coated, hemispherical press-fit Duraloc '100 Series' cups in 68 consecutive patients; 61 were combined with the cementless Spotorno stem and ten with the cemented Lubinus SP II stem. Under-reaming of 2 mm achieved a press-fit. Of the 71 hips, 69 (97.1%) were followed up after a mean of 2.4 years. Migration analysis was performed by the Ein Bild Rontgen Analyse method, with an accuracy of 1 mm. The mean total migration after 24 months was 1.13 mm. Using the definition of loosening as a total migration of 1 mm, it follows that 30 out of 63 cups (48%) were loose at 24 months.  (+info)

Survivorship and radiological analysis of the standard Souter-Strathclyde total elbow arthroplasty. (4/2728)

We undertook a radiological analysis of 186 standard Souter implants to determine survivorship and to analyse the pattern of failure in those needing revision. The implants had been inserted as a primary procedure in patients with rheumatoid arthritis of the elbow at our hospital over the last 12 years. Taking revision as an endpoint, the survivorship after 12 years was 87%. If, however, revision and loosening, defined as the Hindex value equivalent to demarcation of 1 mm around the whole implant, are also included, the survivorship falls to 80%. Of the 24 implants revised, 18 (75%) were for problems with the humeral component, three (12.5%) with the ulnar component and three (12.5%) for instability. Loosening of the humeral component occurred when the implant extended into the humerus, with the tip moving anteriorly on to the anterior humeral cortex. Our study indicates that loosening can be predicted by the rate of change in this angle of extension of the prosthesis.  (+info)

Cement migration after THR. A comparison of charnley elite and exeter femoral stems using RSA. (5/2728)

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)

Subsidence of a non-polished stem in revisions of the hip using impaction allograft. Evaluation with radiostereometry and dual-energy X-ray absorptiometry. (6/2728)

We revised 24 consecutive hips with loosening of the femoral stem using impaction allograft and a cemented stem with an unpolished proximal surface. Repeated radiostereometric examinations for up to two years showed a slow rate of subsidence with a mean of 0.32 mm (-2.0 to +0.31). Fifteen cases followed for a further year showed the same mean subsidence after three years, indicating stabilisation. A tendency to retroversion of the stems was noted between the operation and the last follow-up. Retroversion was also recorded when displacement of the stem was studied in ten of the patients after two years. Repeated determination of bone mineral density showed an initial loss after six months, followed by recovery to the postoperative level at two years. Defects in the cement mantle and malalignment of the stem were often noted on postoperative radiographs, but did not correlate with the degrees of migration or displacement. After one year, increasing frequency of trabecular remodelling or resorption of the graft was observed in the greater trochanter and distal to the tip of the stem. Cortical repair was noted distally and medially (Gruen regions 3, 5 and 6). Migration of the stems was the lowest reported to date, which we attribute to the improved grafting technique and to the hardness of the graft.  (+info)

Induction of macrophage C-C chemokine expression by titanium alloy and bone cement particles. (7/2728)

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)

Cytokine levels in synovial fluid from hips with well-functioning or loose prostheses. (8/2728)

We analysed synovial fluid from 88 hips, 38 with osteoarthritis and 12 with well-functioning and 38 with loose hip prostheses. The levels of TNF-alpha, IL-1beta (71 hips) and IL-6 (45 hips) were measured using the ELISA technique. Joints with well-functioning or loose prostheses had significantly increased levels of TNF-alpha compared with those with osteoarthritis. Hips with aseptic loosening also had higher levels of IL-1beta but not of IL-6 compared with those without an implant. The levels of TNF-alpha and IL-1beta did not differ between hips with stable and loose prostheses. Higher levels of TNF-alpha were found in hips with bone resorption of type II and type III (Gustilo-Pasternak) compared with those with type-I loosening. The level of cytokines in joint fluid was not influenced by the time in situ of the implants or the age, gender or area of the osteolysis as measured on conventional radiographs. Our findings support the theory that macrophages in the joint capsule increase the production of TNF-alpha at an early phase probably because of particle load and in the absence of clinical loosening. Since TNF-alpha has an important role in the osteolytic process, the interfaces should be protected from penetration of joint fluid.  (+info)

Cases reported • Prosthesis Failure; Prosthesis Loosening. On-line free medical diagnosis assistant. Ranked list of possible diseases from either several symptoms or a full patient history. A similarity measure between symptoms and diseases is provided.
Find information on Automation & Modular Components, Inc. on IQSdirectory. Request information on Automation & Modular Components, Inc. located at ,Davisburg ,MI.
Arm--blood supply; Blood Vessel Prosthesis; Blood Vessel Prosthesis Implantation--adverse effects; Blood Vessel Prosthesis Implantation--instrumentation; Graft Occlusion, Vascular--etiology; Peripheral Arterial Disease--surgery; Popliteal Artery--surgery; Prosthesis Design; Prosthesis Failure; Saphenous Vein--transplantation. ...
Recalls: Visit us for regular six-month examinations. Often, small problems that are developing around the restorations can be found at an early stage and corrected easily, but waiting for a longer time may require redoing the entire restoration. Inadequate return for examination is the most significant reason for prostheses failure. We will contact you when it is time for your recall appointment ...
In the mid-2000s, before the orthopaedic community was aware of the potentially catastrophic shortcomings of metal-on-metal (MoM) hip implants, nearly half of all hip replacements used MoM components. With so many people walking around today on those prostheses, orthopaedists are looking for rational and effective ways to monitor these patients for adverse reactions to metal debris. Findings from…
This paper examines the determinants of the time it takes for an index options market to be brought back to efficiency after put-call parity deviations, using intraday transactions data from the French CAC 40 index options over the August 2000 - July 2001 period. We address this issue through survival analysis which allows us to characterize how differences in market conditions influence the expected time before the market reaches the no-arbitrage relationship. We find that moneyness, maturity, trading volume as well as trade imbalances in call and put options, and volatility are important in understanding why some arbitrage opportunities disappear faster than others. After controlling for differences in the trading environnement, we find evidence of a negative relationship between the existence of ETFs on the index and the time to ...
The rationale for this result (coincident with other studies) is that Europeans (or our Asian ancestors) went through one or more population bottlenecks when diversity was pretty small, allowing these defects to persist, even many milennia later. In contrast African populations have always been pretty large, forcing these potentially harmful genes to become less frequent through normal natural selection ...
A new Roentgen stereophotogrammetric analysis system, using a biplane technique, has been developed to determine the migration and rotation of total hip replacement (THR) femoral components in three dimensions. Stainless steel marker balls were injected into the femur during the operation. The patients stood within a calibration frame during the X-ray. The two exposures were taken consecutively allowing radio-opaque shutters to be moved in front of the films to prevent fogging. Studies with a model demonstrated that the system was capable of measuring the position of an implant to better than 0.11 mm (2 SD). In vivo measurements demonstrated that the migration rate of the different parts of the femoral component could be determined with an accuracy of 0.25 to 0.50 mm/year. By considering the accuracy determined in different ways, methods for improving the system have been identified. The migration and rotation rate of 58 Hinek cemented femoral components was studied for four years. Migration was three
We performed a clinical and radiological study to determine the rate of failure of the Charnley Elite-Plus femoral component. Our aim was to confirm or refute the predictions of a previous roentgen stereophotogrammetric analysis study in which 20% of the Charnley Elite-Plus stems had shown rapid posterior head migration. It was predicted that this device would have a high early rate of failure.We examined 118 patients at a mean of nine years after hip replacement, including the 19 patients from the original roentgen stereophotogrammetric study. The number of revision procedures was recorded and clinical and radiological examinations were performed. The rate of survival of the femoral stems at ten years was 83% when revision alone was considered to be a failure. It decreased to 59% when a radiologically loose stem was also considered to be a failure. All the patients previously shown in the roentgen stereophotogrammetric study to have high posterior head migration went on to failure. There was a highly
The animation is intended to help support expert testimony regarding why certain types of knee prosthesis (such as the Zimmer NexGen) have failed.
Metallosis is the putative medical condition involving deposition and build-up of metal debris in the soft tissues of the body. Metallosis has been hypothesized to occur when metallic components in medical implants, specifically joint replacements, abrade against one another. Metallosis has also been observed in some patients either sensitive to the implant or for unknown reasons even in the absence of malpositioned prosthesis. Though rare, metallosis has been observed at an estimated incidence of 5% of metal joint implant patients over the last 40 years. Women may be at slightly higher risk than men. If metallosis occurs, it may involve the hip and knee joints, the shoulder, wrist, or elbow joints. The abrasion of metal components may cause metal ions to be solubilized. The hypothesis that the immune system identifies the metal ions as foreign bodies and inflames the area around the debris may be incorrect because of the small size of metal ions may prevent them from becoming haptens. Poisoning ...
An acoustophoresis device made up of modular components is disclosed. Several modules are disclosed herein, including ultrasonic transducer modules, input/output modules, collection well modules, and various connector modules. These permit different systems to be constructed that have appropriate fluid dynamics for separation of particles, such as biological cells, from a fluid.
We performed this investigation to determine the possible migration starting immediately after surgery and the effect of different weightbearing regimens on the migration pattern of an uncemented hip stem (CLS). Stem migration was determined with radiostereometry analysis with baseline when the patients still were anesthetized. Subsequent examinations were done up to 1 year. Twenty-nine patients (mean age, 55 years; range, 26-63 years) were randomized to either unrestricted weightbearing combined with intensive physiotherapy from the first day after surgery or to partial weightbearing and a conservative training regimen for the first 3 months after surgery. At 1 week, subsidence was -0.03 mm in the unrestricted weightbearing group and 0.01 mm in the partial weightbearing group. At 1 year, subsidence was 1.01 mm in the unrestricted weightbearing group and 0.51 mm in the partial weightbearing group. One patient in the unrestricted weightbearing group had revision surgery because of aseptic ...
Materials and methods: A total of 49 patients, who required at least two implants, had two sites randomised according to a split-mouth design to receive one abutment of each type at seven different centres. The time of loading (immediate, early or delayed) and of prosthesis (provisional crowns of fixed prosthesis) was decided by the clinicians, but they had to restore both implants in a similar way. Provisional prostheses were replaced by definitive ones 3 months after initial loading, when the follow-up for the initial part of this study was completed. Outcome measures were: prosthesis failures, implant failures, complications, pink esthetic score (PES), peri-implant marginal bone level changes, and patient preference ...
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Median patient age was 34 years (16-40) and follow-up was 14 years (mean 13, range 5-22). Stem survival to the endpoint revision for loosening was 100% and to the endpoint revision for any reason, excluding infection was 88% (95% confidence interval 78-98) at 16 years. No stem was revised for aseptic loosening. Nine stems were revised for other reasons. Radiographically, one stem was definitely loose at 16 years. The median patient Harris pain score improved from marked pain to no pain at latest follow-up. Patient activity level improved, albeit minimally, for 8 years after surgery. At latest follow-up, 98% of the patients remained satisfied with their surgery.. ...
PubMed journal article Long-Term Survivorship and Clinical Outcomes of a Single Radius Total Knee Arthroplast were found in PRIME PubMed. Download Prime PubMed App to iPhone or iPad.
The hip prosthesis consists of four components made of metal, ceramic or polyethylene.. The cup (metal) is used to replace the worn cartilage of the acetabulum.. The ceramic or polyethylene insert is inserted into the cup and allows the head to articulate.. The ceramic or metal femoral head replaces the native femoral head and is attached to the cone of the femoral stem. It articulates with the insert to form the joint. It articulates with the insert to form the joint.. The femoral stem (metal) is implanted in the femur. ...
Processing techniques for various surface mount modular components provide various structures for single device components (10) and multiple device components (FIGS. 6 and 7) suitable as character displays. The technique beings with a slab of substrate material 12 patterned on both sides. Plated through holes (33, 43) connecting back side terminals (19, 20) to front side connective strips (22, 24) are formed. Devices (15, 16) are mounted to land areas (13, 34) and wire bonded to connecting pads (14). The front side is coated with epoxy to encapsulate the devices in a layer having an outer surface formed into optional lenses (262, 263). The slab is then separated to provide the modular components.
The Stanmore Medical Centre is located at 85 Crowshott Avenue, Stanmore, Stanmore, HA7 1HS. The branch surgery is located at Stanmore Park Medical Centre, William Drive, Stanmore, HA7 1HS. The branch surgery at William Drive was visited as part of the inspection. The surgery has good transport links and there is a pharmacy located nearby.. The provider is registered with CQC to deliver the Regulated Activities; diagnostic and screening procedures, family planning, maternity and midwifery services, surgical procedures and treatment of disease, disorder or injury. The practice is located within the Harrow Clinical Commissioning Group (CCG) and provides services to 13,748 patients under the terms of a personal medical services (PMS) contract. This is a contract between general practices and NHS England for delivering services to the local community.. The Stanmore Medical Centre provides primary medical services to approximately 13,748 patients living in Harrow. This includes 180 patients looked ...
Researchers at Rush University Medical Center have identified a key immunological defense reaction to the metals in joint replacement devices, leading to
High failure rate of OCZ SSDs yields answers that raise troubling questions - SSDs are like a bad drug. Theyre the best improvement one can make to a PC, but... My 4th OCZ SSD failed today at a remote site. With 4 out of 13 dr
View Notes - LAB 9 v2 from CS 1371 at Georgia Tech. LAB 9 NOTE: These labs are known for high failure rates. Therefore, if I show an example using data, a graph, etc yours may be totally different
In our program of limb-saving surgery, we are constantly comparing the possibilities and results of replacing large postresection defects of bone by either allografts or endoprostheses....
Authors: Kevin Perry, AliSina Shahi RECOMMENDATION: Yes. Different bearing surfaces such as metal-on-metal (MoM), metal-on-polyethylene and dual taper modular stems in the setting of taper corrosion can influence the serum and synovial markers. Metal debris may interfere with automated cell counts. Manual cell counts are preferred when evaluating patients for PJIs who have elevated synovial…
A 2012 article by I.A. Malek et al. published in Journal of Bone and Joint Surgery titled The sensitivity, specificity and predictive values of raised plasma metal ion levels in the diagnosis of adverse reaction to metal debris in symptomatic patients with a metal-on-metal arthroplasty of the hip. helps demonstrate the rate at which patients… Continue Reading. ...
F963-17 Standard Consumer Safety Specification for Toy Safety. See also WK15744 proposed revision. See also WK15745 proposed revision. See also WK19961 proposed revision. See also WK50977 proposed revision. See also WK53731 proposed revision. See also WK53735 proposed revision. See also WK62180 proposed revision. See also WK65785 proposed revision. See also WK65787 proposed revision. See also WK65788 proposed revision. See also WK74455 proposed revision. See also WK74456 proposed revision. See also WK74457 proposed revision. See also WK74458 proposed revision. See also WK74459 proposed revision. See also WK74460 proposed revision. See also WK78288 proposed revision. See also WK78289 proposed revision. ...
The paper presents an approach to a cost-efficient modularly built non-dispersive optical IR-gas sensor (NDIR) based on a construction kit. The modularity of the approach offers several advantages: First of all it allows for an adaptation of the performance of the gas sensor to individual specifications by choosing the suitable modular components. The sensitivity of the sensor e.g. can be altered by selecting a source which emits a favorable wavelength spectrum with respect to the absorption spectrum of the gas to be measured or by tuning the measuring distance (ray path inside the medium to be measured). Furthermore the developed approach is very well suited to be used in teaching. Together with students a construction kit on basis of an optical free space system was developed and partly implemented to be further used as a teaching and training aid for bachelor and master students at our institute. The components of the construction kit are interchangeable and freely fixable on a base plate. ...
The latest speculation about Project Ara has the modular phone and some of its parts coming to Barcelona next month for MWC. Fifty modular components are expected to be displayed. While not all of them will be in working condition, we do expect to see a complete working version of the modular handset at the show. Spiral Two and Spiral Three are the two handset models that will be available to consumers...
The first such family is the Am2900 series of integrated circuits (ICs) created in 1975 designed in bit-slice topology so they could be used as modular components each representing a different aspect of a computer control unit (CCU). For details on the Am2900 Family see The Am2900 Family Data Book, by AMD. ...
Risk for revision surgery remained higher among women in the study after considering factors specific to the patient, surgeon, surgery, and type of implant.
Not quite sure when its a revision. Is it a revision if the surgeon fuses the same vertebrae over again, probably because something went wrong the first time? Or is the definition broader? E.g., say you have your lumbar fused, then your thorax starts acting up (adding on, taking on new curvature) and your surgeon fuses that as well. Is that considered a revision?
Our JTS Extendible prostheses are designed for use in both the upper and lower limbs of young patients. Click here to find out more.
Stanmore Implants Worldwide (the Company) is committed to conducting all business affairs legally and ethically. Find out more >>
Grant Thornton guides organizations to long-term performance through digital transformation strategies that leverage data management, agile and program management and integration and separation services.
At The Motley Fool, we poke plenty of fun at Wall Street analysts and their endless cycle of upgrades, downgrades, and initiating coverage at neutral. So you might think wed be the last people to give virtual ink to such news. And we would be -- if that were all we were doing.. But in This Just In, we dont simply tell you what the analysts said. Well also show you whether they know what theyre talking about. To help, weve enlisted Motley Fool CAPS, our tool for rating stocks and analysts alike. With CAPS, we track the long-term performance of Wall Streets best and brightest -- and its worst and sorriest, too.. And speaking of the best ... ...
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and that yamakasi catleap is not the same for overclocking as the x-star and qnix panels happen to be. did the catleap have multi-inputs? thats going to add latency and hurt response time. there was one very special version of the catleap that was stable up to around 100hz but the price became super inflated on them as it was only a certain early revision that would overclock successfully. since then the newer x-star and qnix panels with single dvi-d inputs have proved to be very decent overclockers. 96hz is pretty much guaranteed and the panels response time is very fast if you go with the single input version. newer panels are popping up everyday so we will have to see if they continue to improve in this area ...
Scientists use a variety of tools to track the sizes of populations. Survivorship curves are one of the tools they use. In this lesson, we will...
Difference between revisions of Talk:Kiteboardingeasily transportable devices to enable Courses Advice As Well As Methods To Remain Ahead ...
Revision questions set 11.2 2.4 1. The graph shows the speed of a driver driving up a hill (positive = uphill, negative = downhil...
Revision Skincare Nectifirm 8oz. Professional Size allows you to use the skin tightening lotion for long term to target your area.
In this IGCSE revision guide to Humans in the environment, we shall ponder upon how humans have influenced the environment and the methods of conservation.
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The 70cc model is used for biventricular heart failure in adult men, while the 50cc is for children and women. As good results ... Orthotopic cardiac prosthesis for two-staged cardiac replacement. Am J Cardio 1969; 24:723-730. "Treasures of American History ... Lewis died 5 weeks later of liver failure after slipping into a coma due to the amyloidosis. In 2012, a study published in the ... At that time, a European report stated that Celyad's C-Cure cell therapy for ischemic heart failure "could only help a ...
Frootko, N. J. (1984). "Causes of Ossiculoplasty Failure using Porous Polyethylene (Plasti-Pore) Prostheses". In Grote, J. J. ( ...
Newman MM, Hoffman MS, Gesink MH (1967). "Mechanical failure of Starr-Edwards aortic prosthesis due to ball fracture". J Thorac ... Hoffman, M. S.; Wellman, W. E.; Herrell, W. E. (1950-08-02). "Failure of absorption of aureomycin and terramycin administered ... Hoffman, M. S.; Wellman, W. E.; Herrell, W. E. (1950-08-02). "Failure of absorption of aureomycin and terramycin administered ... "Thromboembolic complications following insertion of the Hufnagel prosthesis". The Journal of Thoracic and Cardiovascular ...
Biological failures: These can occur due to caries in the tooth (one of the commonest causes of crown and bridge failures) or ... Abutment: The tooth or implant that supports and retains a dental prosthesis. Resin bonded bridge: A dental prostheses where ... Mechanical failures: These failures can occur due to loss of retention of the bridge due to improper cementation, construction ... vitality loss or periodontal disease can all lead to bridge failure. Bridge failures result in clinical complications and ...
42.*Marbach, J.J., Psychosocial Factors for Failure to Adapt to Dental Prostheses. In Zinner, I., ed. Semiprecision Attachments ...
This condition is similar to the heart failure seen in gigantism. The prevalence of KFS is unknown due to the lack of studies ... September 2002). "Preliminary clinical experience with the Bryan Cervical Disc Prosthesis". Neurosurgery. 51 (3): 840-5, ... Papanastassiou ID, Baaj AA, Dakwar E, Eleraky M, Vrionis FD (March 2011). "Failure of cervical arthroplasty in a patient with ... disease can be addressed by performing cervical disc arthroplasty using a device such as the Bryan cervical disc prosthesis. ...
Tricuspid valve replacement using either a mechanical prosthesis or a bioprosthesis may be indicated. (Mechanical prostheses ... If the TR is due to left heart failure or pulmonary hypertension, prognosis is usually dictated by these conditions, not the TR ... Severe TR causes right-sided heart failure, with the development of ascites and peripheral edema. A pansystolic heart murmur ... Such dilatation is most often due left heart failure or pulmonary hypertension. Other causes of right ventricular dilatation ...
This was further modified into the Delta III prosthesis in 1991. As Grammont's reverse ball and socket prosthesis gained ... Many doubted the effectiveness of his design and suggested that it would lead to higher failure rates, creating significant ... In 1998, U.S. orthopedic surgeon Mark Frankle began designing a reverse ball and socket prosthesis that did not adhere to the ... Unfortunately, his design resulted in several early failures, leading him to abandon this concept. Multiple other surgeons ...
It is due to the failure of fusion of the maxillary prominence and medial nasal processes (formation of the primary palate). ... March 2006). "Application of a temporary palatal prosthesis in a puppy suffering from cleft palate". Journal of Veterinary ... It occurs due to the failure of fusion of the lateral palatine processes, the nasal septum, or the median palatine processes ( ... The resulting birth defect reflects the locations and severity of individual fusion failures (e.g., from a small lip or palate ...
Thus, heart valve failure is likely to threaten the life of the individual, while breast implant or hip joint failure is less ... nose prosthesis, ocular prosthesis, and injectable filler. Other types of organ dysfunction can occur in the systems of the ... The many examples of implant failure include rupture of silicone breast implants, hip replacement joints, and artificial heart ... The consequences of implant failure depend on the nature of the implant and its position in the body. ...
investigate medical equipment failures and provide advice about the purchase and installation of new equipment. • develop and ... design and develop engineered therapies (for example, neural-integrative prostheses). • adapt computer hardware or software for ... investigate medical equipment failure, and advise hospitals about purchasing and installing new equipment. Biomedical engineers ... Training Accident Investigation Analysis of Failures, Root Causes, and Human Factors Safe Medical Devices Act (SMDA) of 1990 ...
This failure causes feelings of intense guilt that not even Hamilton's long-term female friend Mildred Krantz can help him ... but replaced it with a self-designed cybernetic prosthesis. He also provided Superboy with the visor that duplicated Superman's ...
A varus position of more than 3° has generally been found to increase the failure rate of the prosthesis. - Anterior femoral ... and retention of prosthesis. Acute hematogenous infections: debridement, antibiotic therapy, retention of prosthesis. Late ... Often range of motion (to the limits of the prosthesis) is recovered over the first two weeks (the earlier the better). Over ... Full length projections are also used in order to adjust the prosthesis to provide a neutral angle for the distal lower ...
Salazar E, Izaguirre R, Verdejo J, Mutchinick O (1996). "Failure of adjusted doses of subcutaneous heparin to prevent ... thromboembolic phenomena in pregnant patients with mechanical cardiac valve prostheses". J Am Coll Cardiol. 27 (7): 1698-703. ...
In September 1926, he had his right eye removed and replaced with a glass prosthesis. Having declined a job as Jack Dempsey's ... However, complications occurred and he died of heart failure on October 22, 1926, at 2:30 pm. Greb was buried at Calvary ...
High failure rates were associated with teeth that had previous root canal treatment, and with patients who exhibit para- ... A return visit is then required to fit the final prosthesis. Inlays and onlays may also be fabricated out of porcelain and ... A systemic review found that the most common cause of onlay failure is ceramic fracture, followed by ceramic de-bonding from ... Evidence (Fuzzi and Rapelli) has shown greater failure of Onlays and Inlays in molars than premolars over an 11.5 year period. ...
The main advantages are a greater failure strength, and a good resistance to fatigue. Vitreous carbon is also used as it is ... TiN has been suggested as the friction surface in hip prostheses. While cell culture tests show a good biocompatibility, the ... The material can be used in inner ear ossicles, ocular prostheses, electrical insulation for pacemakers, catheter orifices and ... Aluminosilicates are commonly used in dental prostheses, pure or in ceramic-polymer composites. The ceramic-polymer composites ...
If prosthesis lands outside the landing zone nearer the board than where athlete landed, the jump counts as a failure. In ... Foot drag - often caused by an ill-fitting prosthesis - can be corrected by shortening the length of the prosthesis. Uneven ... Failure to do so could result in them being classified as an ambulatory class competitor. For people in this class with ... People in this class who are lower limb amputees are required to wear their leg prosthesis when they are on the track, and they ...
More modernly, the term hybrid has been used as it permits the inclusion of fixed prosthesis using a variety of both designs ... One major advantage of the resin-retained bridge over a conventional bridge is the failure mode is likely to be debonding of ... A resin-retained bridge (also known as resin-bonded-bridge or resin-bonded fixed dental prosthesis (RBFDP)) is a bridge (a ... Resin-retained-bridges should be considered when a fixed prosthesis retained by natural teeth is required. The use has been ...
The first attempts were valvotomies, (i.e. cutting the valve while the heart is pumping). A ball valve prosthesis placed on the ... Aortic stenosis is treated with aortic valve replacement in order to avoid angina, syncope, or congestive heart failure. ... During the mid-1950s, a single-leaflet prosthesis was developed by Bahnson et al. In early 1960, Ross and Barratt-Boyes used ... The major advantage of stentless valves is that they limit patient-prosthesis mismatch (when the area of the prosthetic valve ...
... a predominant failure mode of medical prostheses. Narrow biocompatibility requirements within the medical industry have over ... The adverse turbulent flow in microfluidic applications can compound component failure modes due to the increased level of ... biologically inert has found wide uses in biomedical applications such as cardiovascular stents and in many skeletal prostheses ...
... prosthesis). It also includes treatment of end-stage renal diseases and dialysis, chronic infections (Hepatitis), organ failure ...
Erectile) prosthesis change (from complications). *(Erectile) prosthesis explantation (removal of the prosthesis without ... manufacturing process of the IPP improved its mechanical survival infection has emerged as the leading cause of implant failure ... "Shortened penis post penile prosthesis". MDLinx. Retrieved 16 February 2016.. *^ "A Retrospective Evaluation of the Safety and ... Once the corporotomies are closed and all of the tubing and components of the prosthesis covered with a layer of Buck's fascia ...
Heart failure (HF) is defined as the incapacity of the heart to function properly, pumping insufficient blood towards the ... Risk of a normally functioning prosthesis being infected after a dental procedure is probably no higher than risk in patient ... Most if not all patients with heart failure will be undergoing drug treatments for their condition and these drugs can produce ... The patient should be receiving medical care, and heart failure should be compensated. Dental treatment is to be limited to ...
The use of an implant prosthesis in the lower jaw could be recommended for younger patients as it is shown to significantly ... It was noted that the risk of implant failure was significantly higher in patients younger than 18 years, but there is ... Overall the use of an implant-prosthesis has a considerable functional, aesthetic and psychological advantage when compared to ...
Tissue-integrated prostheses :osseointegration in clinical dentistry, Per-Ingavar Branemark, George A. Zarb, Tomas Albrektsson ... Failure of a dental implant is often related to the failure of the implant to osseointegrate correctly with the bone, or vice ... Implant failure refers to the failure of any medical implant to meet the claims of its manufacturer or the health care provider ... Implant failure can have any number of causes. The rates of failure vary for different implants. The monitoring of the safety ...
Therefore, visual prostheses are developed to restore vision for the blind by using the stimulation. Depending upon which ... heart failure, and even stroke. Early implantable pacemakers worked only a short time and needed periodic recharging by an ... Second Sight and the Humayun group at USC are the most active groups in the design of intraocular retinal prostheses. The ... Weiland J.D.; Humayun M.S. (July 2008). "Visual prosthesis". Proceedings of the IEEE. 96 (7): 1076-84. doi:10.1109/JPROC. ...
Biological prostheses, i.e. pericardial heart valves of animal origin (xenogenic), offer a viable alternative. However, in ... leading to early failure of the valvular function. Aortic valve replacement using a homograft was first performed over 50 years ... The lack of durable heart valve prostheses for young patients has driven forward research in tissue engineering approaches for ... The pulmonary valve then needs to be replaced by a heart valve prosthesis. A drawback of this method is that it can frequently ...
Failure to meet cost targets will lead to substantial losses for an organisation. In addition, with global competition, the R&D ... and prostheses. Items as intricate as housings for cochlear implants are manufactured through the deep drawn and shallow drawn ... In 2017, an article in the policy journal Milbank Quarterly criticized the FDA for its failure to safeguard electronic health ...
A failure to respond to treatments that would normally work may indicate a need for review of the diagnosis. ... "Transparent nanocrystalline yttria-stabilized-zirconia calvarium prosthesis". Nanomedicine. Elsevier Inc. doi:10.1016/j.nano. ...
Failure to accomplish these methods prior restorations can lead to the complexity or risk of failure of treatment such as ... Tooth and Prosthesis Related Factors. Peri-Implant Diseases and Conditions:. Peri-Implant Health. Peri-Implant Mucositis. Peri- ... During this phase, any defects need to be restored with removable or fixed through dental prosthesis, prosthodontics, or other ...
... with only larger defects requiring a mesh prosthesis. Varied Spigelian hernia mesh repair techniques have been described, ...
... and respiratory distress and failure. These complications or their symptoms, such as difficulty breathing, chest pain, poor ... Surgical resection Radiation therapy Sclerotherapy Percutaneous bone cement Bone graft Prosthesis Surgical stabilization ...
It can be used to produce specialized splints, prostheses, parts for medical devices and inert implants. The end goal of 3D ... Concepts and practical experience in the field of chronic heart failure]". Zeitschrift Fur Arztliche Fortbildung Und ... It is having a rapid growth in the prosthesis, medical implants, novel drug formulations and the bioprinting of human tissues ...
However the same metal can also be vulnerable to fatigue damage through repeated use or from sudden stress failure when a load ... and bone repair and prostheses applications where biocompatibility, low friction and corrosion resistance are required. ...
Eklund, Anders; Nichols, Thomas E.; Knutsson, Hans (2016). "Cluster failure: Why fMRI inferences for spatial extent have ... bite bars may also discomfort those with dental prostheses.[51] ... "Commentary: Cluster failure: Why fMRI inferences for spatial ...
In the case where the disease is not stabilised, the cause of failure should be considered, and the treatment progresses on to ... and how to clean removable prostheses. These intra-oral appliances should also be well-designed and fitting.[44] ...
A titanium prosthesis is surgically embedded into the skull with a small abutment exposed outside the skin. A sound processor ... Failure of osseointegration. *Chronic infection. *Trauma. *Soft tissue *Irritation of the skin surrounding the implant ...
As this point, the surgeon can remove the arthritic portions of the joint and then secure the ball and socket prostheses within ... These challenges and high rates of failure led to the development of the reverse total shoulder arthroplasty to overcome the ... Various materials can be used to make prostheses, however the majority consist of a metal ball that rotates within a ... "Nine-year outcome after anatomic stemless shoulder prosthesis: clinical and radiologic results". Journal of Shoulder and Elbow ...
The studies Experience with Anatomical Soft Cohesive Silicone gel Prosthesis in Cosmetic and Reconstructive Breast Implant ... A breast implant failure: the parts of a surgically explanted breast implant are the red, fibrous capsule (left), the ruptured ... A breast implant is a prosthesis used to change the size, shape, and contour of a woman's breast. In reconstructive plastic ... A breast implant failure: capsular contracture is a medical complication, in this case, a Baker scale Grade IV contraction, of ...
Failure to Communicate - Original air date of December 14, 2014. Papac's attempt to speed up production with shotgun logging ... after Swilley finds a leg on the riverbed that turns out to be a prosthesis, he and Roger bring up a pair of logs to help ... Swilley's failure to respond from underwater throws Chapman into a panic as a storm moves in; a mixture of dead trees and ... Dave's mistakes on the job and failure to report in on time may put his future with Rygaard in jeopardy; a giant submerged ...
Implant-supported prosthesis - a combination of dentures and implants; bases are placed into the bone, allowed to heal, and ... Implants and implant-supported prosthesis - also an orthodontic treatment as it involves bones ... Failure of eruption of teeth. *Little's Irregularity Index. *Malocclusion. *Scissor Bite. *Standard anatomical position ...
Failure of the material was usually a result of undetected flaws usually nucleated during processing. ... Cermets are also used in dentistry as a material for fillings and prostheses. ...
The Argus retinal prosthesis became the first approved treatment for the disease in February 2011, and is currently available ... Premature ovarian failure 1. *Initiation factor: Leukoencephalopathy with vanishing white matter. *snRNP: Retinitis pigmentosa ... A visual prosthesis may be an option in certain people with severe disease.[1] It is estimated to affect 1 in 4,000 people.[1] ... "Interim Results from the International Trial of Second Sight's Visual Prosthesis". Ophthalmology. 119 (4): 779-88. doi:10.1016 ...
Ideally, a prosthesis is made around the time of the mastectomy and it can be used just weeks after the surgery.[citation ... undergoing delayed breast reconstruction have been previously treated with radiation or have had a reconstruction failure with ... A nipple prosthesis can be used to restore the appearance of the reconstructed breast. Impressions can be made and photographs ... Breast implant Breast lift Breast reduction plasty Free flap breast reconstruction Nipple prosthesis Titoo Rabin, Roni Caryn ( ...
Late failure, i.e. pregnancy following spontaneous recanalization of the vasa deferentia, has also been documented.[12] The ... Early failure rates, i.e. pregnancy within a few months after vasectomy, typically result from unprotected sexual intercourse ... Fascial interposition: Recanalization of the vas deferens is a known cause of vasectomy failure(s).[29] Fascial interposition ... better than tubal ligations for which the failure rate is one in every 200 to 300 cases.[13] A 2005 review including both early ...
Failure of the material was usually a result of undetected flaws usually nucleated during processing. The existing technology ... Cermets are also used in dentistry as a material for fillings and prostheses. Ceramic parts have been used in conjunction with ...
Algorithms for robustly handling a variety of failure modes, from misalignments, dead-units (not responding, not releasing) to ... Prosthesis. *Utility fog. Further reading[edit]. *. "Self-Reconfigurable Robots An Introduction". Great Introduction to where ...
Failure to recognize the need for air can prove life-threatening for the performer, with at least one report of a mermaid ... There are several tail making companies supplying the community with everything from fabric tails to full SFX prostheses ...
In the case of diabetic autonomic neuropathy, it is due to the failure of the heart and arteries to appropriately adjust heart ... and now wear a prosthesis.[20] ... Premature ovarian failure. *testicular: enzymatic *5α-reductase ...
... instead being ignored or shunned as failures and as hope-destroying examples of reality. Similarly, the culture is also ill- ... through providing breast prostheses, as a goal.[129] ...
Failure and complications[edit]. Failure[edit]. The current measure of success in vasectomy reversal surgery is achievement of ... Outcome and late failures compared in 4 techniques of vasoepididymostomy in 153 consecutive men. J. Urol. 174: 651, 2005, PMID ...
Medicine and healthcare biology, biocompatible prostheses, diagnostic and therapeutic devices ranging from clinical equipment ... Safety engineering, safe operation and safe failure modes. *Reliability engineering, product durability ...
Removable dental prostheses (mainly dentures) are sometimes considered a form of indirect dental restoration, as they are made ... They are supposed to be more durable, but long-term studies did not always detect a significantly lower failure rate of ceramic ... and for particular prostheses, such as copings and bridges. In some cases, the intricate nature of some implants requires the ...
Proponents argue that the selective pressure placed on all natural life forms minimizes and removes failures. ... Bionic implants differ from mere prostheses by mimicking the original function very closely, or even surpassing it. ...
... medical prostheses, orthopedic implants, dental and endodontic instruments and files, dental implants, sporting goods, jewelry ... which reduce the integrity of the assembly welds and lead to joint failure. ...
"Artificial Heart Offers Hope to Heart Failure Patients". 16 January 2019.. *^ Weber S, Kamohara K, Klatte RS, Luangphakdy V, ... Orthotopic cardiac prosthesis for two-staged cardiac replacement. Am J Cardio 1969; 24:723-730. ... At that time, a European report stated that Celyad's C-Cure cell therapy for ischemic heart failure[54][54] "could only help a ... The 70 cc is used for biventricular heart failure in adult men, while the 50cc is for children and women.[34] As good results ...
... ... The purpose of this in vitro study was to evaluate the ultimate force-to-failure distal to the terminal implant of a simulated ... Comparison between the left and right side of the tested prostheses did not show any significant differences (P=.595). ... The joint adjacent to the cantilevered section of an implant-supported complete fixed dental prosthesis (ICFDP) undergoes the ...
Reoperation for graft failure of femoropopliteal bypass with externally supported knitted Dacron prosthesis - The Journal of ... Reoperation for graft failure of femoropopliteal bypass with externally supported knitted Dacron prosthesis. Mii S., Mori A., ...
During the past decade, the application of expandable prostheses has gained remarkable attention because it improves patients ... Complications/Failure Mode. Failure mode was defined as a medical emergency that may lead to prosthesis or implant revision or ... Mechanical failure of the Repiphysis expandable prosthesis: a case report. J Bone Joint Surg Am. 2010;92(5):1250-1253. doi: ... Mechanical failure of the Repiphysis expandable prosthesis: a case report. J Bone Joint Surg Am. 2010;92(5):1250-1253. doi: ...
I have experience with orthopedic cement failure and have reviewed a previous case involving the failure of a knee prosthesis ... Bone Cement Named as Likely Cause of Prosthesis Failure by Polymer Expert Witness. by Joseph ONeill - June 30, 2016. ... Home / Expert Case Studies / Bone Cement Named as Likely Cause of Prosthesis Failure by Polymer Expert Witness ... This case involves the failure of bone cement used during the installation of a knee prosthesis. The Plaintiff underwent left ...
Prosthesis. * Heart Valve Prosthesis. Implantation* Prosthesis. Failure. *. Aortic Valve/*surgery Heart Valve Diseases/*surgery ... Prosthesis. Failure. *. Prosthesis. -Related Infections/*epidemiology Prosthesis. -Related Infections/*therapy. Adult ; Aged ; ... Prosthesis. * Hospital Mortality* Prosthesis. Failure. *. Cardiac Catheterization/*methods Heart Valve Prosthesis. Implantation ... Prosthesis. * Prosthesis. Design* Prosthesis. Failure. *. Arthroplasty, Replacement, Knee/*instrumentation Reoperation/* ...
Prosthesis Loosening. On-line free medical diagnosis assistant. Ranked list of possible diseases from either several symptoms ... Thrombosis of mitral valve prosthesis presenting as abdominal pain. A 67-year-old woman presented with abdominal pain, anemia, ... Jude bileaflet mechanical prosthesis. After her admission, echocardiography confirmed an immobile leaflet of the prosthetic ... Presentation varies, from symptoms of congestive heart failure or systemic embolization, to fever or no symptoms. New or ...
The animation is intended to help support expert testimony regarding why certain types of knee prosthesis (such as the Zimmer ... This weak and inadequate fusion allows movement and loosening between the femur and prosthesis resulting in prosthesis failure. ... Knee Prosthesis Failure Animation (Cementless CoCrMo Alloy). Posted by Trisha Haszel Kreibich on Thu, May 26, 2011 ... Topics: knee replacement, trial exhibit, implant failure, prosthesis, cementless, Zimmer NexGen, medical exhibit, cromium ...
In this manner, a Type II failure of the prosthesis may be avoided. In other aspects of the invention, therapeutic agents may ... the implantation of the prosthesis allows for occluding fluid to weep from the prosthesis and into a sac of an aneurysm to ... be delivered and/or a seal may be formed about the prosthesis to prevent a Type I failure. ... A tubular prosthesis, which may be an endovascular prothesis, is provided which includes a tubular member (stent or stent/graft ...
Implants failures. After 1 year of function, three implants were lost in three patients (one implant per patient) rendering a ... Regarding the implant failures, the majority occurred in the first 6 months of function, following the pattern for standard- ... Implant failure: evaluated as implant mobility and removal of stable implants dictated by progressive marginal bone loss or ... Fourunit fixed dental prostheses replacing the maxillary incisors supported by two narrow-diameter implants-a five-year case ...
A double-weave vascular prosthesis includes an inner layer that contacts a flow of blood, and an outer layer in contact with ... Payment Failure. Sorry, intended action could not be completed due to payment failure. Please contact your card issuing bank, ...
The prosthesis includes an armature adapted for deployment in a radiall ... A cardiac-valve prosthesis is adapted for percutaneous implantation. ... Payment Failure. Sorry, intended action could not be completed due to payment failure. Please contact your card issuing bank, ...
Reliability and fatigue failure modes of implant-supported aluminum-oxide fixed dental prostheses. / Stappert, Christian F.J.; ... Reliability and fatigue failure modes of implant-supported aluminum-oxide fixed dental prostheses. Clinical Oral Implants ... Objectives: To investigate failure modes and reliability of implant-supported aluminum-oxide three-unit fixed dental prostheses ... Reliability and fatigue failure modes of implant-supported aluminum-oxide fixed dental prostheses. ...
A capa trend analysis was conducted for the reported failure mode and concluded that loosening may result from other factors ... PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO. Manufacturer (Section D) STRYKER ORTHOPAEDICS ... MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON PRIM TIB BASEPLATE - CEMENTED PROSTHESIS, KNEE, PATELLO/ ... Device Problems Failure to Osseointegrate (1863); Malposition of Device (2616); Insufficient Information (3190) ...
Use of Hand Prosthesis With Surface Electrical Stimulation for Treatment of Phantom Limb Pain (EPIONE). The safety and ... Operation of hand prosthesis with surface electrical sensory feedback. Device: Surface electrical stimulation Surface ... Experiments with the superficial stimulation and hand prosthesis control (sEH) will then be performed three days per week for ... If everything works, the investigators will then proceed with the therapeutic use of the robotic hand prosthesis. More ...
... J Shoulder Elbow Surg. 2013 May;22(5): ... Joint Prosthesis* * Male * Middle Aged * Osteoarthritis / surgery* * Prosthesis Failure * Recovery of Function ...
A modular prosthesis system having generally planar bone contact surface with an undercut edge around the periphery of the ... to the planar surface with a cam locking mechanism secured to the undercut edge to increase the thickness of the prosthesis. ... Lapse for failure to pay maintenance fees. Dec 12, 2000. FP. Expired due to failure to pay maintenance fee. Effective date: ... Modulator knee prosthesis system. US4995883 *. Feb 8, 1989. Feb 26, 1991. Smith & Nephew Richards Inc.. Modular hip prosthesis ...
A femoral hip prosthesis comprises a main member, a modular member and a means for connecting the two. The main member has a ... Lapse for failure to pay maintenance fees. 14 Oct 2008. FP. Expired due to failure to pay maintenance fee. Effective date: ... Modular prosthesis kit. US4770660 *. 20 Jan 1987. 13 Sep 1988. Osteonics Corp.. Femoral prosthesis with selectively removable ... Modular radial head prostheses. US8562616. 9 Oct 2008. 22 Oct 2013. Biomet Manufacturing, Llc. Knee joint prosthesis system and ...
A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a ... Lapse for failure to pay maintenance fees. 16 Sep 2014. FP. Expired due to failure to pay maintenance fee. Effective date: ... 7. The prosthesis of claim 3. , wherein said prosthesis comprises two of said sensors that are located one on each side of an ... 8. The prosthesis of claim 3. , wherein said prosthesis comprises two of said sensors that are Located at locations which are ...
The pressurizer includes a seal which surrounds at least part of the outer circumference of the prosthesis to be implanted. ... Lapse for failure to pay maintenance fees. 21 Oct 2008. FP. Expired due to failure to pay maintenance fee. Effective date: ... The prosthesis inserter as claimed in claim 35 in which said location feature is provided by a side or sides of the prosthesis. ... 3. The prosthesis inserter as claimed in claim 2 wherein the means to control the position and depth of the prosthesis to be ...
There is no evidence of implant failure. " no further investigation for this event is possible at this time as no devices and/ ... PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, SEMI-CONSTRAINED, UNCEMENTED, POROUS, CO. Manufacturer (Section D) STRYKER ORTHOPAEDICS ... There is no evidence of implant failure. Device history review: review of the device history records indicates that all devices ... MAUDE Adverse Event Report: STRYKER ORTHOPAEDICS-MAHWAH TRIATHLON PS X3 TIBIAL INSERT PROSTHESIS, KNEE, PATELLO/FEMOROTIBIAL, ...
The prosthesis has a mating load shoulder in its proximal section which lands on the load shoulders formed in the femur. The ... prosthesis has a stem that extends downward to a distal end. The intermediate portion of the stem between the distal end and ... A femoral prosthesis has load shoulders for transferring normal loading to the femur at the proximal end to reduce stress ... Lapse for failure to pay maintenance fees. 25 Jul 2006. FP. Expired due to failure to pay maintenance fee. Effective date: ...
Salvaging the Fixed Full-Arch Screw-Retained Prosthesis Using Novel Fixed Attachment System. After Late Implant Failure. Alan M ... Salvaging the Fixed Full-Arch Screw-Retained Prosthesis Using Novel Fixed Attachment System After Late Implant Failure. ... to converting existing dentures to a fixed full-arch provisional prosthesis as well as use in a definitive fixed prosthesis has ... and benefits of salvaging failing implant-supported prostheses via a novel fixed attachment system. ...
... and other visual prostheses, they typically require patients to be ... CYCLOPS Robot Emulates Vision of People with Eye Prostheses. October 19th, 2009 Editors Ophthalmology ... Once thats done, he adds, we can run many, many tests without bothering the blind prosthesis carriers.. Among the things ... Caltech scientists have now developed a robot that can "wear" visual prostheses and simulate how those might perform in the ...
Vanderbilt University scientists are developing an arm prosthesis that is powered by a miniaturized rocket engine. The ... The Vanderbilt Arm: Mini Rocket Engine Powered Prosthesis. August 20th, 2007 Editors Rehab ... The valves are connected to the spring-loaded joints of the prosthesis by belts made of a special monofilament used in ... Vanderbilt University scientists are developing an arm prosthesis that is powered by a miniaturized rocket engine. The ...
23888056 - Research advances in heart failure: a compendium.. 12736096 - Transient global amnesia associated with an acute ... Heart Valve Prosthesis / adverse effects*. Heart Valve Prosthesis Implantation. Humans. Mitral Valve* / surgery. Pregnancy. ... A complication in anticoagulation using low-molecular weight heparin in a patient with a mechanical valve prosthesis. A case ... exists with regard to the appropriate and safe anticoagulation regimen of gravid women with mechanical heart valve prostheses. ...
The placement of a hip prosthesis is one of the most common orthopedic surgical procedures. Some implants contain metal and are ... therefore capable of releasing metal particles like cobalt in patients who wear metal prostheses. Cobalt can be responsible of ... Are the cobalt hip prosthesis dangerous?] Med Sci (Paris). 2016 8-9;32(8-9):732-8. doi: 10.1051/medsci/20163208021. Epub 2016 ... The placement of a hip prosthesis is one of the most common orthopedic surgical procedures. Some implants contain metal and are ...
... and mechanical prostheses (MP) after valve re-replacement for bioprostheses is not well-documented. This research compares the ... Heart Valve Prosthesis Implantation*. Humans. Middle Aged. Prosthesis Failure*. Reoperation. Retrospective Studies. ... What prosthesis should be used at valve re-replacement after structural valve deterioration of a bioprosthesis?. ... 16784083 - Failure modes of the carpentier-edwards pericardial bioprosthesis in the aortic position.. 18751463 - Surgical ...
We aimed to evaluate in a single study the haemodynamic performances of five different widely used aortic valve prostheses: ... Conclusions Stentless bioprostheses displayed haemodynamics superior to stented or mechanical prostheses and had the closest ... Differences in performance of five types of aortic valve prostheses: haemodynamic assessment by dobutamine stress ... Differences in performance of five types of aortic valve prostheses: haemodynamic assessment by dobutamine stress ...
The prosthodontists included in the study proved to have an adequate knowledge of issues that pervade the failures in the ... concerning the failures of prosthetic works, and to provide a reflection on the type of responsibility assumed by the ... analysis evidenced that the dentists with up to 15 years of professional practice assign the responsibility of failures most ...
The invention is particularly suitable for determining the color of dental prostheses. ... The invention can be used to determine the color to be given to a dental prosthesis, for example, on the basis of color ... Lapse for failure to pay maintenance fees. 7 Aug 2001. FP. Expired due to failure to pay maintenance fee. Effective date: ... It is essential for a dental prosthesis (e.g. a crown, a bridge, an implant, etc.,) to be as close as possible in color to the ...
  • The present invention relates to a joint prosthesis system and more particularly, to a prosthesis in which the bone contact surfaces can be adjusted or augmented by the addition of modular components to adjust the thickness of the prosthesis in those areas where the implanted prosthesis will be in direct contact with the bone. (google.com)
  • The following animation contains sequences that are intended to help support expert witness testimony regarding one of the causes of failure of certain types of knee prostheses (such as the Zimmer NexGen knee prosthetic). (medivisuals.com)
  • This aim of this study was to verify the level of knowledge of prosthodontics specialists from the city of Porto Alegre, Rio Grande do Sul State, concerning the failures of prosthetic works, and to provide a reflection on the type of responsibility assumed by the prosthodontist during the dental treatment. (odontoforense.com)
  • By placing one or more ovoid resilient prosthetic nuclei in series inside a peanut-shaped housing of metal ceramic or polymeric material, which housing is shaped so that it is separated into two sections longitudinally, a thin profile prosthesis can be created which will allow placement of the device through a small opening for implant into the thoracic or lumbar portion of the spine. (google.es)
  • Conclusion: When the prosthetic planning needs supporting elements at the surface posterior to the mental foramen, the prosthesis should be segmented, especially in the region of the symphyseal area. (clinicaldentistry.net)
  • In cases involving full-arch implant-supported restorations, late implant failure can be particularly catastrophic due to the implant failure's impact on the prosthetic component of treatment. (cdeworld.com)
  • Loosening of the fixation of the implant and the fatigue failure of prosthetic stems create problems for both patient and surgeon. (iospress.com)
  • The Osseoanchored Prostheses for the Rehabilitation of Amputees (OPRA) device instead uses fixtures and screws implanted into the patient's remaining thigh bone to connect an external prosthetic limb. (healthcanal.com)
  • Long-term competing risks for overall and cause-specific failure of rotating-hinge distal femoral arthroplasty for tumour reconstruction. (torun.pl)
  • The risk of cardiac failure following metal-on-metal hip arthroplasty . (nih.gov)
  • Survivorship analyses of three types of uncemented total shoulder arthroplasty prostheses (BioModular ® , initial Nottingham TSR and current Nottingham TSR systems with 11, 8 and 4 year survivorship data respectively) were compared. (biomedcentral.com)
  • The long term survivorship of the prosthesis developed by C. Neer for the cemented total shoulder arthroplasty (TSA) is almost the single one with well documented outcomes [ 5 ] with 87% fifteen year survivorship rate for Neer I & II cemented shoulder prostheses. (biomedcentral.com)
  • The purpose of this in vitro study was to evaluate the ultimate force-to-failure distal to the terminal implant of a simulated ICFDP reinforced with glass fiber compared with that of a conventionally fabricated prosthesis. (ovid.com)
  • 5. The prosthesis system of claim 4 in which a pawl is affixed to the cam and in which the distal surface of the augmentation device has a locking cavity to accept the pawl, said cavity having locking means on its edge to lock the pawl in a predetermined position when the pawl is rotated. (google.com)
  • 8. The prosthesis system of claim 1 which is a tibial component of a knee prosthesis, and in which the tibial component includes a stem on the distal surface of the component, said augmentation device further comprises an opening of a size to allow said stem to pass through said device when said device is secured to said prosthesis. (google.com)
  • 9. The prosthesis system of claim 3 in which the augmentation devices further include devices with different angles between the proximal surface and opposed distal surface. (google.com)
  • The prosthesis has a stem that extends downward to a distal end. (google.ca)
  • 4. The prosthesis according to claim 9, wherein the stem has a stem length from the lower end of the distal section to the shoulder on the proximal section, measured along the stem axis, and a flexible section length of the flexible section, measured along the stem axis, the flexible section length being at least two-thirds the stem length. (google.ca)
  • The bone cement failed at the distal end of the prosthesis stem of femoral head prosthesis six months after implantation. (asminternational.org)
  • The purpose of this literature review was to compare the possible biomechanical failures of implant‑supported prostheses with extension distal to the mental foramen, such as implant fracture, prosthesis screw loosening or fracture, lack of passive fitting of the metallic structure, bone saucerization, and in some cases, muscle pain and limited mouth opening, and to propose a design to these prostheses. (clinicaldentistry.net)
  • Manzi MR, Manzano R, Pimentel AC, Polo CI, Deboni MCZ, Naclério-Homem MG. Medial mandibular deflection related to biomechanical failures of implant supported fixed prosthesis with distal rigid connection to the mentual foramen. (clinicaldentistry.net)
  • If not, the challenge becomes determining whether a new implant can be placed, either at or to the mesial or distal aspect of the failed site, in addition to how best to alter the existing prosthesis so it will be acceptable to the patient in consideration of the new implant. (cdeworld.com)
  • PURPOSE: To retrospectively evaluate the 6-year survival rates and technical/ biologic complication rates of single-retainer glass-ceramic resin-bonded fixed dental prostheses (RBFDPs). (uzh.ch)
  • The aim of this study was a retrospective assessment of the up to 8-year clinical outcomes of zirconia ceramic single-retainer resin-bonded fixed dental prostheses (RBFDPs). (uzh.ch)
  • Materials degradation with resultant clinically significant valvular dysfunction has been an important late complication of cardiac valvular replacement with mechanical prostheses. (houstonmethodist.org)
  • In a review of the necropsies of 99 patients dying late after cardiac valvular replacement, two cases of fatal valve deterioration were encountered, one involving each of the above failure modes. (houstonmethodist.org)
  • A visco-elastic motion-limiting artificial intervertebral disc prosthesis is provided that mimics the physiologic function of a normal spinal disc. (google.co.uk)
  • 2. The spinal disc prosthesis of claim 1 , wherein said electronics are hermetically sealed within said compression stop. (google.co.uk)
  • 2. A disc prosthesis according to claim 1 wherein the first and second flexible members are positioned in a spaced relation to each other and are positioned an equal and opposite distance from a central point of the disc prosthesis. (google.es)
  • This invention relates to the design and use of a unique disc prosthesis for the lumbar and thoracic spine. (google.es)
  • Cinotti G., David T., Postacchini F.: Results of disc prosthesis after a minimum follow-up period of 2 years. (springer.com)
  • Edeland H. G.: Suggestions for a total elasto-dynamic intervertebral disc prosthesis. (springer.com)
  • Froming E. C.: Intervertebral disc prosthesis and instruments for locating same. (springer.com)
  • When scientists want to test the performance of artificial corneas, retinal implants, and other visual prostheses, they typically require patients to be outfitted with one of these devices. (medgadget.com)
  • About 90%-95% of inflatable prosthesis implants produce erections suitable for intercourse. (medicinenet.com)
  • Some implants contain metal and are therefore capable of releasing metal particles like cobalt in patients who wear metal prostheses. (nih.gov)
  • Introduction: Some mechanical failures and possible biological problems were related to the medial mandibular flexure in patients who had implant‑supported fixed extensive prostheses, with bilateral rigid connection in implants posterior to the mental foramen. (clinicaldentistry.net)
  • Late implant failures have been associated with moderate to severe bone loss, a larger number of failed implants per patient, a higher incidence in male patients, and occurrence mostly in posterior areas. (cdeworld.com)
  • 9 They have also been associated with functional occlusal overload when implant failure involves fracture of the components of the implant restoration, whether a single restoration or a mandibular overdenture retained by two implants. (cdeworld.com)
  • For example, the complete loss of an implant in a full-arch prosthesis supported by four implants will render the treatment unstable. (cdeworld.com)
  • Therefore, the quandary that clinicians face is ascertaining whether sufficient implants remain in the appropriate location to support and sustain the original prosthesis. (cdeworld.com)
  • If so, depending on the nature of the failure, the failing implant can be removed or covered, 11 and the original prosthesis can be secured to the remaining implants. (cdeworld.com)
  • Implant failure fields and degradation of implants. (iospress.com)
  • Photo above: All on 4 prosthesis use mini or conventional (longer) implants. (google.com)
  • The migration of implants is an important research topic which can lead to a better understanding of their failure and durability. (wessex.ac.uk)
  • patient profiles and implant characteristics and to develop and calibrate a prediction model for failure of implants. (bioportfolio.com)
  • The failure of implants and the follow-up time in days of implants were considered the outcome. (bioportfolio.com)
  • Multivariate Cox proportional hazards regression analysis is used to find out the important risk factors for failure of dental implants and to develop the model for prediction of failure of dental implants at follow-up. (bioportfolio.com)
  • Once the failure of dental implants occurs, it may cause some severe negative consequences for patients. (bioportfolio.com)
  • To reduce these risks it is important and necessary for clinicians to be able to predict the risk of the failure of dental implants of individual patients before they undergo dental implant treatment. (bioportfolio.com)
  • The aim of the project is to find out the possible risk factors for failure of dental implants and to develop a prediction model for the failure of dental implants at follow-up as a tool for clinicians to establish patients individual risk profile. (bioportfolio.com)
  • The outcomes included the follow-up time of implants and whether the failure of the implants was observed at the follow-up. (bioportfolio.com)
  • The failure of implants is defined as the presence of peri-implantitis, presence of mobility of implants, or removal of the implants for any reasons, for instance, unacceptable performance in aspects of function, tissue physiology, esthetics, and patients' satisfaction after placement of suprastructure. (bioportfolio.com)
  • The 8-year and 11-year survivorship rates for the initially used modified BioModular ® uncemented prosthesis were relatively low (75.6% and 71.7% respectively) comparing to the reported survivorship of the conventional cemented implants. (biomedcentral.com)
  • There has been a significant improvement in outcome with changes in the implant design, from the initial linked and fully constrained prostheses to the present-day unlinked and linked, semiconstrained implants. (hindawi.com)
  • Linked prostheses, like the Coonrad-Morrey implant, have been reported to have better long-term functional outcomes than unlinked implants, like the Souter-Strathclyde prosthesis [ 1 , 2 ]. (hindawi.com)
  • Recent publications have reported that, despite the increased incidence of complications, the insertion of an expandable prosthesis is associated with satisfying results. (healio.com)
  • When such failures occur after osseointegration and attachment of the prosthesis, the complications can be particularly troublesome, costly, time-consuming, and uncomfortable for patients. (cdeworld.com)
  • This results in metabolic complications and possibly renal failure. (fiercebiotech.com)
  • Jamieson WR, von Lipinski O, Miyagishima RT, Burr LH, Janusz MT, Ling H, Fradet GJ, Chan F, Germann E. Performance of bioprostheses and mechanical prostheses assessed by composites of valve-related complications to 15 years after mitral valve replacement. (springer.com)
  • These are used as reference regions when describing for example complications including hip prosthesis loosening on medical imaging. (wikipedia.org)
  • In one aspect of the present invention, the implantation of the prosthesis allows for occluding fluid to weep from the prosthesis and into a sac of an aneurysm to cause occlusion thereof without introducing the occluding fluid into the blood stream. (google.com)
  • During the past decade, the application of expandable prostheses has gained remarkable attention because it improves patients' appearance and allows limb growth preventing leg length discrepancy. (healio.com)
  • patients who receive inadequate anticoagulation, particularly with valve prostheses in the mitral position, have an increased risk for thrombus or pannus formation. (lookfordiagnosis.com)
  • To monitor potential toxicity of metal hip prostheses, an annual monitoring of patients implanted is recommended and includes clinical examination, radiological examination and blood cobalt determination. (nih.gov)
  • Retention of certain metabolites in the blood may contribute to cognitive impairment in patients with kidney failure, revealed a study appearing in an upcoming issue of the Journal of the American Society of Nephrology (JASN). (medindia.net)
  • To investigate a potential link between retained metabolites and cognitive impairment, Manjula Kurella Tamura (Stanford University and Veterans Affairs Palo Alto) and her colleagues analyzed the blood of 141 patients with kidney failure who took tests on cognitive function. (medindia.net)
  • Retention of certain metabolites in the blood may contribute to cognitive impairment in patients with kidney failure. (medindia.net)
  • When the researchers screened for the metabolites in an additional 180 patients with kidney failure, the association between 4-hydroxyphenylacetate and impaired cognitive function was replicated. (medindia.net)
  • This metabolite has been previously linked to cognitive impairment in patients with liver failure and in patients with inborn errors of urea synthesis," said Dr. Tamura. (medindia.net)
  • A new study finds that more than 2 million kidney failure patients worldwide die prematurely every year because they can't get treatment. (medindia.net)
  • For patients, late implant failure is synonymous with additional costs, procedures, and recovery time. (cdeworld.com)
  • 12 Considering that pain, cost, and recovery time are among the three key concerns for patients facing any implant procedure, 3 it behooves clinicians to familiarize themselves with simplified, cost-effective chairside procedures for salvaging implant-supported fixed full-arch prostheses for those instances when implant failures occur. (cdeworld.com)
  • CONCLUSIONS: Despite several prostheses available, most patients referred to Heart Valve Clinics and good candidate regarding their clinical profile cannot be implanted with TMVR because of mismatch between their anatomy and prosthesis characteristics. (medworm.com)
  • In the largest multi-institutional study to date, led by researchers from Penn Medicine, the team found that among patients who underwent a transcatheter aortic valve replacement, a high number experienced severe and moderate cases of prosthesis-patient mismatch--meaning the implanted heart valve is too small for the patient which can lead to inadequate blood flow. (news-medical.net)
  • A new heart device called the MitraClip (from Abbott) has been shown to benefit patients with heart failure and reduce death rates among them significantly. (news-medical.net)
  • Ramadan fasting can be safe for patients with heart failure, according to research presented today at the 29th Annual Conference of the Saudi Heart Association, held 1 to 3 March in Riyadh, Saudi Arabia. (news-medical.net)
  • Some patients who underwent valve replacement with the original Starr-Edwards prosthesis in the 1960s are alive to this day. (bmj.com)
  • In the last 40 years more than 80 models of prostheses have been developed for patients requiring valve replacement. (bmj.com)
  • Some patients may not have a long enough residual limb to properly fit a socket prosthesis or may have other conditions, such as scarring, pain, recurrent skin infections, or fluctuations in the shape of the residual limb that prevent them from being able to use a prosthesis with a socket. (healthcanal.com)
  • Patients require about six months of training and rehabilitation after the second surgery, before being fitted with their own customized prosthesis by a trained prosthetist. (healthcanal.com)
  • For example, the failure will cause a financial loss for patients and a possible shock concerning both mental and physical aspects. (bioportfolio.com)
  • 8 although in practice prosthetists often rely on clinical judgment to match patients to prostheses. (ahrq.gov)
  • Each type of the prosthesis studied was implanted in consecutive group of patients - 90 patients with BioModular ® system, 103 with the initial Nottingham TSR and 34 patients with the current Nottingham TSR system. (biomedcentral.com)
  • Unambiguous presentation of data allows surgeons, patients and policy makers to directly compare commonly used prosthesis constructs to a reference construct. (bmj.com)
  • Calcification of either tissue leads to deterioration and, ultimately, failure causing poor quality of life and decreased overall life expectancy in patients. (frontiersin.org)
  • This case involves the failure of bone cement used during the installation of a knee prosthesis. (theexpertinstitute.com)
  • It is alleged that the bone cement used did not adhere to the components of the knee prosthesis. (theexpertinstitute.com)
  • 1. Do you have experience working with/manufacturing knee prosthesis? (theexpertinstitute.com)
  • 2. Do you have knowledge of the bone cement that is used to adhere knee prosthesis components? (theexpertinstitute.com)
  • I have experience with orthopedic cement failure and have reviewed a previous case involving the failure of a knee prosthesis and it's components. (theexpertinstitute.com)
  • The present invention relates to a system for the modification of a prosthesis so that the basic prosthesis can be used in normal surgical procedures and in which certain surfaces can also be adjusted to be used in revision knee surgery or in normal surgery when it is desired to augment the thickness of the prosthesis at various bone contact surfaces. (google.com)
  • For example, in the case of revision surgery, a previously implanted knee prosthesis may have failed for a number of different reasons. (google.com)
  • The Plaintiff's claim in this case arose out of alleged negligence on the part of the Defendant Hospital in failing to diagnose a faulty knee prosthesis over a number of years, resulting in little or no quality of life for the Plaintiff, severe and debilitating pain, unnecessary treatment, and an addiction to painkilling medication. (aclsolicitors.ie)
  • The OPRA device may help those with above-the-knee amputations who have had problems with rehabilitation and have not been able to benefit from available socket prostheses. (healthcanal.com)
  • David the Farmer--the nickname they've given their star prosthesis tester, though he is actually employed as a full-time, on-site -mechanic-is one of a limited pool of amputees fitted with the Symbionic Leg: an artificial knee, ankle, and foot that are integrated into a single bionic limb. (popularmechanics.com)
  • The degree of loosening (gap between the lateral stem contour and the bone or cement) and implant loading was revealed by the dislocation of fragments of the prosthesis. (asminternational.org)
  • Fatigue behavior of titanium femoral hip prosthesis with proximal sleeve-stem modularity. (semanticscholar.org)
  • An important research topic is the modelling of the bone and stem of the prosthesis. (wessex.ac.uk)
  • The surgeon then sizes the stem of the prosthesis to ensure a snug fit into the hollow bone marrow space of the bone. (orthogate.org)
  • The Gruen zones is a system of dividing the interface between the bone and the stem of the hip prosthesis. (wikipedia.org)
  • The simplest type of prosthesis consists of a pair of malleable (bendable) rods surgically implanted within the erection chambers of the penis. (medicinenet.com)
  • Currently a series of mechanical and clinical tests are under way for this new type of prosthesis. (wessex.ac.uk)
  • Thrombosis of mitral valve prosthesis presenting as abdominal pain . (lookfordiagnosis.com)
  • Five years previously, the patient had undergone mitral valve replacement with a St. Jude bileaflet mechanical prosthesis. (lookfordiagnosis.com)
  • In a 9-month period a 52-year-old woman was admitted on 3 occasions with thrombotic obstruction of a Medtronic Hall aortic valve prosthesis. (lookfordiagnosis.com)
  • A complication in anticoagulation using low-molecular weight heparin in a patient with a mechanical valve prosthesis. (biomedsearch.com)
  • when anticoagulation Controversy exists with regard to the appropriate and safe anticoagulation regimen of gravid women with mechanical heart valve prostheses. (biomedsearch.com)
  • What prosthesis should be used at valve re-replacement after structural valve deterioration of a bioprosthesis? (biomedsearch.com)
  • BACKGROUND: The fate of bioprostheses (BP) and mechanical prostheses (MP) after valve re-replacement for bioprostheses is not well-documented. (biomedsearch.com)
  • We aimed to evaluate in a single study the haemodynamic performances of five different widely used aortic valve prostheses: stentless porcine xenograft (Elan), stentless bovine pericardium (Pericarbon Freedom), stented porcine xenograft (Aspire), stented bovine pericardium (More) and mechanical (Ultracor). (bmj.com)
  • The stress performances of the stentless bioprostheses were similar to the mildly stenosed native aortic valve, whereas the performances of the stented and mechanical prostheses resembled that of native valves with mild-to-moderate stenoses. (bmj.com)
  • Conclusions Stentless bioprostheses displayed haemodynamics superior to stented or mechanical prostheses and had the closest performance to a normal, native aortic valve. (bmj.com)
  • By scanning electron microscopy and analytical surface profilometry, seven contemporary heart valve prostheses recovered frm this series were examined. (houstonmethodist.org)
  • AbstractObjectivesTo investigate the impact of the introduction of the next generation self ‐expanding (SE) and balloon‐expandable (BE) transcatheter heart valves (THVs) on the incidence of prosthesis-patient mismatch (PPM) after transcatheter aortic valve replacement (TAVR).BackgroundPPM is a risk factor for accelerated degeneration of bioprosthetic aortic valves. (medworm.com)
  • Transcatheter Mitral Valve Replacement: Factors Associated with Screening Success and Failure. (medworm.com)
  • Pathology of heart valve substitution with mechanical and tissue prostheses. (springer.com)
  • Choice of operation and the prosthesis used for those undergoing valve replacement is important for each individual patient and ideally should be made together by the patient, cardiologist, and surgeon. (bmj.com)
  • The authors report a case of early migration of a self-expanding transcatheter aortic valve prosthesis causing coronary obstruction and myocardial infarction. (ctsnet.org)
  • Thirty-two days later she presented with acute angina, ruled-in for myocardial infarction, and was found to have iatrogenic coronary obstruction from the aortic valve prosthesis due to cephalad migration. (ctsnet.org)
  • Would a CABG x2 Off-pump or on-pump-beating heart be an option if no valve malfunction, and +/- tacking suture for the prosthesis to ascending aorta? (ctsnet.org)
  • Regarding Dr. Baslaim's comments, my main concern with bypassing the left and right coronary systems and tacking the valve in place would be the unpredictable steal from the proximal native coronaries if the prosthesis migrated further up and the coronary ostia were clearly below the valve. (ctsnet.org)
  • Similar extra-anatomic solutions used in extreme cases of supracoronary aortic valve placement with no native ostial compromise should always be accompanied by native ostia surgical closure (unless the grafts are placed because only a partial coronary occlusion is assumed - such as in a coronary ostium in close proximity to the valve annulus), which may not be feasible through the metal frame of the TAVR prosthesis. (ctsnet.org)
  • It and similar valves produced by other manufacturers are now the most commonly implanted type of mechanical prosthesis in the world. (bmj.com)
  • This artificial joint is also called a prosthesis or an implant. (medicinenet.com)
  • Martin Fussenegger refers to it fondly as a "molecular prosthesis" - an artificial aid that compensates for the evolutionary lack of urate oxydase. (fiercebiotech.com)
  • Acetabular prostheses included within the scope of this specification are intended for mechanical fixation between the prosthesis and host bone, by the use of bone cement or through biological fixation. (document-center.com)
  • 1.3 Acetabular prostheses included within the scope of this specification are intended for fixation by press-fit between the prosthesis and host bone, the use of bone cement, the use of bone screws or similar means of mechanical fixation, or through biological fixation of host bone and/or soft connective tissue into a porous surface. (document-center.com)
  • These techniques are now being extended to study bone cement failure to understand better the cement/prosthesis interface failure behaviour. (wessex.ac.uk)
  • A penile prosthesis is another treatment option for men with erectile dysfunction ( ED ). These devices are either malleable or inflatable. (medicinenet.com)
  • Sometimes a penile prosthesis is implanted during surgery to reconstruct the penis when scarring has caused erections to curve (Peyronie's disease). (medicinenet.com)
  • How Does the Penile Prosthesis Work? (medicinenet.com)
  • The inflatable penile prosthesis consists of two cylinders -- a reservoir and a pump -- which are placed surgically in the body. (medicinenet.com)
  • While men who have had the prosthesis surgery can see the small surgical scar where the bottom of the penis meets the scrotal sac, other people probably will be unable to tell that a man has an inflatable penile prosthesis. (medicinenet.com)
  • A penile prosthesis does not change sensation on the skin of the penis or a man's ability to reach orgasm . (medicinenet.com)
  • Once a penile prosthesis is put in, however, it may destroy the natural erection reflex. (medicinenet.com)
  • A femoral prosthesis has load shoulders for transferring normal loading to the femur at the proximal end to reduce stress shielding. (google.ca)
  • The prosthesis has a mating load shoulder in its proximal section which lands. (google.ca)
  • Essentially all visual prosthesis efforts share a common principle of providing focal electrical stimulation to intact visual structures (including the retina, optic nerve, lateral geniculate nucleus (LGN) and occipital visual cortex) evoking the sensation of discrete points of light called phosphenes. (utah.edu)
  • The 8 million patent was issued to Second Sight Medical Products, Inc., for a visual prosthesis apparatus that enhances visual perception for people who have gone blind due to outer retinal degeneration. (ipwatchdog.com)
  • If CYCLOPS can use computer-enhanced images from a 50-pixel array to make its way safely through a room with a chair in one corner, a sofa along the wall, and a coffee table in the middle, then there is a good chance that a blind person with a 50-pixel retinal prosthesis would be able to do the same. (medgadget.com)
  • Second Sight Medical Products, Inc., located in Sylmar, Calif., is a privately held company founded in 1998 by Alfred Mann, Dr. Sam Williams and Gunnar Bjorg with the goal of creating a retinal prosthesis to provide sight to subjects blinded from outer retinal degenerations, such as retinitis pigmentosa. (ipwatchdog.com)
  • These reasons include a malpositioning of the prosthesis on original implantation, loosening of the prosthesis, infection, or dislocation. (google.com)
  • These categories are not necessarily exclusive because infection, for example, may cause a loosening of the prosthesis which in turn, may cause dislocation. (google.com)
  • In some instances, it is necessary to remove additional bone during revision surgery because of bone infection, or because of stems fractures or fatigue fractures of the prosthesis and resulting bone damage. (google.com)
  • These results demonstrated that endogenous bFGF is important for endothelialization due to angiogenesis in fabric vascular prostheses, whereas thrombus and infection might have a negative effect. (nii.ac.jp)
  • The failures of a total hip replacement are similar to those of a hemiarthroplasty: loosening, implant wear, infection, fracture, and dislocation. (playhouseharlow.com)
  • The followup data included condition of the surgical wound, infection, neurological deficit, range of movement, stability of the prosthesis in axial compression and varus/valgus stress, severity of pain, shift of the implant tip, and failure of the prosthesis. (hindawi.com)
  • Failure was defined by veneer chipping or chipping in combination with framework fracture. (nyu.edu)
  • The purpose of the study was to evaluate the effect of different preparation designs and different surface treatments on the fracture resistance of monolithic zirconia inlay -retained fixed dental prosthesis [IRFDP]. (bvsalud.org)
  • This design change in conjunction with changes in the manufacturing process led to some models of this generation of the prostheses being prone to fracture of one of the retaining struts, allowing the disc to escape with catastrophic results. (bmj.com)
  • This weak and inadequate fusion allows movement and loosening between the femur and prosthesis resulting in prosthesis failure. (medivisuals.com)
  • Angiogenesis by bFGF is important for endothelialization in vascular prostheses and is significant from shortly after implantation. (nii.ac.jp)
  • Antithrombogenicity is important when the diameter of vascular prostheses become small for satisfactory patency. (nii.ac.jp)
  • Collateral formation in ischemic heart disease is induced by angiogenic factors including bFGF.We hypothesized that tissue-fragmented (TF-) grafts are rich of angiogenic activity from shortly after implantation and it ability may work for collateral formation to the ischemic area when it is used for a small diameter vascular prosthesis in the coronary artery position. (nii.ac.jp)
  • Publications] Tomizawa Y: 'Endogenous basic fibroblast growth factor for endothelialization due to angiogenesis in fabric vascular prostheses' ASAIO J. 42. (nii.ac.jp)
  • Vascular prosthesis suitable for use as a surgical graft is produced by implanting a rod or tube in a living host animal such as a sheep and allowing collagenous tissue to grow on the implant to form a coherent tubular wall of collagenous tissue. (patents.com)
  • The implant is subsequently removed and the tubular wall of collagenous tissue is stripped from the rod or tube and tanned in glutaraldehyde to serve as a vascular prosthesis. (patents.com)
  • The joint adjacent to the cantilevered section of an implant-supported complete fixed dental prosthesis (ICFDP) undergoes the most stress because of force magnification in this area, making it more prone to mechanical failure. (ovid.com)
  • Objectives: To investigate failure modes and reliability of implant-supported aluminum-oxide three-unit fixed dental prostheses (FDPs) using two different veneering porcelains. (nyu.edu)
  • Failures in dental prosthesis: dentists perception. (odontoforense.com)
  • The invention can be used to determine the color to be given to a dental prosthesis, for example, on the basis of color measurements performed on adjacent teeth in the mouth of the patient. (google.com.au)
  • The invention is particularly suitable for determining the color of dental prostheses. (google.com.au)
  • The present invention provides a functionally graded glass/ceramic/glass sandwich system especially useful in damage resistant, ceramic dental and orthopedic prosthesis. (freepatentsonline.com)
  • The follow-up time is defined as the difference in time between implant placement and implant failure, or the date of the last follow-up time point if the dental implant is in an acceptable state. (bioportfolio.com)
  • Based on the explosion of new restorative materials on the dental market, the decision regarding which type of material to use for three-unit anterior fixed prostheses has become more difficult. (dentaleconomics.com)
  • No catastrophic failures occurred. (uzh.ch)
  • Dislocation generally refers to the movement of the ball component of the hip prosthesis out of the socket component. (playhouseharlow.com)
  • said seal being resilient and serving not only to pressurize said cement but also to control the position of the prosthesis by its shape and control the insertion depth of the prosthesis by its thickness. (google.co.uk)
  • 11. The prosthesis inserter as claimed in claim 10 including a locator spaced away from the attachment device and adapted to engage the prosthesis to prevent axial and angular movement thereof in relation to the insertion axis of the inserter. (google.co.uk)
  • In July of that year, he underwent a resection of the tumour and the insertion of a prosthesis. (aclsolicitors.ie)
  • Glenoid component loosening was the main factor of prosthesis failure in both prostheses and mainly occurred in the first 4 postoperative years. (biomedcentral.com)
  • To revise one or both loosened prosthesis components, to achieve postoperative pain relief, and preserve ankle range of motion. (springer.com)
  • The placement of a hip prosthesis is one of the most common orthopedic surgical procedures. (nih.gov)
  • Though medication and surgical techniques can help control symptoms, the only cure for heart failure is an organ transplant. (encyclopedia.com)
  • A 76-year-old woman with renal failure underwent an uncomplicated TAVR. (ctsnet.org)
  • The animation focuses on the cementless cobalt-chromium-molybdenum (CoCrMo) alloy prosthesis. (medivisuals.com)
  • Certain cements have a notably higher rate of failure than others, and if used on this patient it may be the likely cause of his pain and immobility. (theexpertinstitute.com)
  • The statistical analysis evidenced that the dentists with up to 15 years of professional practice assign the responsibility of failures most often to the laboratory (p = 0.001) and to the patient (p = 0.021), but over the years this trend is reversed. (odontoforense.com)
  • Success of implant-supported or -retained prostheses, in general, is predicated on meticulous patient selection and preplanning multiple treatment aspects. (cdeworld.com)
  • 1.4 Custom (designed explicitly for a single patient), revision, or constrained acetabular prostheses are not covered within the scope of this specification. (document-center.com)
  • This article deals with choice of prosthesis for the individual patient. (bmj.com)
  • After the second surgery, the patient works with a trained physical therapist to gradually place weight on the OPRA device using a training prosthesis. (healthcanal.com)
  • The patient was taken to the operating room where a transverse aortotomy was made at the normal anatomic site (not cephalad to the prosthesis), exposing the metal stent component of the failed device. (ctsnet.org)
  • A capa trend analysis was conducted for the reported failure mode and concluded that loosening may result from other factors not necessarily related to the device. (fda.gov)
  • 2. The prosthesis system of claim 1 in which the opposed surfaces of the augmentation device are angled in respect to each other. (google.com)
  • 7. The prosthesis system of claim 1 in which the mechanism to secure the augmentation device includes a lug having a beveled edge adapted to engage the edge of the recess. (google.com)
  • 10. The prosthesis inserter as claimed in claim 1 in which the pressurizer is mounted to enable pressure to be maintained on said seal when said attachment device is disconnected. (google.co.uk)
  • 13. The prosthesis inserter as claimed in claim 11 which includes a release adapted to release the attachment device. (google.co.uk)
  • 16. The prosthesis inserter as claimed in claim 11 in which implantation loads applied to the inserter are transmitted to the prosthesis to be implanted through the attachment device. (google.co.uk)
  • A conventional leg prosthesis uses a specially-fitted cup-like shell called a socket that fits over the remaining portion of the patient's leg (the residual limb) to secure the device to the leg. (healthcanal.com)
  • Prostheses can help people who have lost a leg due to trauma or cancer to regain mobility and to more easily participate in everyday activities," said William Maisel, M.D., M.P.H., acting director of the Office of Device Evaluation in the FDA's Center for Devices and Radiological Health. (healthcanal.com)
  • Other manufacturers continue to produce single disc prostheses-for example, the Medtronic-Hall and the Aortech Ultracor. (bmj.com)
  • Stentless bioprostheses, whether porcine or bovine, displayed superior haemodynamics across nearly all echocardiographic parameters: lower gradients, larger effective orifice area, higher dimensionless severity index (DSI) and lower resistance, when compared with stented or mechanical prostheses. (bmj.com)
  • stented porcine prosthesis (bottom left). (bmj.com)
  • The uncemented Nottingham Total Shoulder Replacement prosthesis system (Nottingham TSR) was developed from the previous BioModular ® shoulder prosthesis taking into consideration the causes of the initial implant's failure. (biomedcentral.com)
  • All these prostheses were implanted for the treatment of disabling pain in the shoulder due to primary and secondary osteoarthritis or rheumatoid arthritis. (biomedcentral.com)
  • The initial Nottingham shoulder prosthesis showed significantly higher survivorship than the BioModular ® uncemented prosthesis, but lower than expected. (biomedcentral.com)
  • Chronic renal failure or chronic kidney disease is progressive loss in kidney function. (medindia.net)
  • An increase in serum phosphorus levels in African Americans with CKD is associated with faster progression to kidney failure, known as end-stage renal disease. (medindia.net)
  • Acute renal failure is the sudden cessation of the functioning of kidneys, that can be due to reduced renal blood flow, damage to renal tissues. (medindia.net)
  • Most common failures are chips and outright fractures of the ceramic from the metal. (dentaleconomics.com)
  • In other aspects of the invention, therapeutic agents may be delivered and/or a seal may be formed about the prosthesis to prevent a Type I failure. (google.com)
  • The invention is directed to bioengineered graft prostheses made from two or more superimposed, chemically bonded layers of processed tissue material prepared from cleaned tissue material derived from animal sources. (google.com.au)
  • The bioengineered graft prostheses of the invention are prepared using methods that. (google.com.au)
  • The bioengineered graft prostheses of the invention are prepared using methods that preserve cell compatibility, strength, and bioremodelability of the processed tissue matrix. (google.com.au)
  • The invention is directed to bioengineered graft prostheses prepared from cleaned tissue material derived from animal sources. (google.com.au)
  • Vision- and hearing-based prostheses bypass faulty organs and receptors entirely, processing and translating raw sensor data into signals that the brain can interpret. (popularmechanics.com)
  • A tubular prosthesis, which may be an endovascular prothesis, is provided which includes a tubular member (stent or stent/graft combination) and an outer covering having portions sealed to the tubular member. (google.com)