Prosthesis Failure: Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.Prosthesis Design: The plan and delineation of prostheses in general or a specific prosthesis.Prostheses and Implants: 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.Joint Prosthesis: Prostheses used to partially or totally replace a human or animal joint. (from UMDNS, 1999)Knee Prosthesis: Replacement for a knee joint.Hip Prosthesis: Replacement for a hip joint.Penile Prosthesis: 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.Heart Valve Prosthesis: A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.Heart Failure: 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.Artificial Limbs: Prosthetic replacements for arms, legs, and parts thereof.Visual Prosthesis: 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.Prosthesis Implantation: Surgical insertion of a prosthesis.Prosthesis Fitting: The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed)Neural Prostheses: Medical devices which substitute for a nervous system function by electrically stimulating the nerves directly and monitoring the response to the electrical stimulation.Ossicular Prosthesis: An implant used to replace one or more of the ear ossicles. They are usually made of plastic, Gelfoam, ceramic, or stainless steel.Dental Prosthesis: 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)Dental Prosthesis, Implant-Supported: 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)Heart Valve Prosthesis Implantation: Surgical insertion of synthetic material to repair injured or diseased heart valves.Treatment Failure: 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.Blood Vessel Prosthesis: Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.AmputeesMaxillofacial Prosthesis: 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.Larynx, Artificial: 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.Arthroplasty, Replacement: Partial or total replacement of a joint.Eye, Artificial: 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)Penile Implantation: Surgical insertion of cylindric hydraulic devices for the treatment of organic ERECTILE DYSFUNCTION.Prosthesis-Related Infections: Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).Reoperation: A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.Sexology: This discipline concerns the study of SEXUALITY, and the application of sexual knowledge such as sexual attitudes, psychology, and SEXUAL BEHAVIOR. Scope of application generally includes educational (SEX EDUCATION), clinical (SEX COUNSELING), and other settings.Phosphenes: A subjective visual sensation with the eyes closed and in the absence of light. Phosphenes can be spontaneous, or induced by chemical, electrical, or mechanical (pressure) stimuli which cause the visual field to light up without optical inputs.Visual Perception: The selecting and organizing of visual stimuli based on the individual's past experience.Visual Acuity: Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.Sensory Aids: Devices that help people with impaired sensory responses.Visual Cortex: Area of the OCCIPITAL LOBE concerned with the processing of visual information relayed via VISUAL PATHWAYS.Bioprosthesis: Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers.Aortic Valve: The valve between the left ventricle and the ascending aorta which prevents backflow into the left ventricle.Dobutamine: A catecholamine derivative with specificity for BETA-1 ADRENERGIC RECEPTORS. It is commonly used as a cardiotonic agent after CARDIAC SURGERY and during DOBUTAMINE STRESS ECHOCARDIOGRAPHY.Aortic Valve Stenosis: A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.Echocardiography, Stress: A method of recording heart motion and internal structures by combining ultrasonic imaging with exercise testing (EXERCISE TEST) or pharmacologic stress.Ceramics: Products made by baking or firing nonmetallic minerals (clay and similar materials). In making dental restorations or parts of restorations the material is fused porcelain. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed & Boucher's Clinical Dental Terminology, 4th ed)Glass: Hard, amorphous, brittle, inorganic, usually transparent, polymerous silicate of basic oxides, usually potassium or sodium. It is used in the form of hard sheets, vessels, tubing, fibers, ceramics, beads, etc.Dental Porcelain: A type of porcelain used in dental restorations, either jacket crowns or inlays, artificial teeth, or metal-ceramic crowns. It is essentially a mixture of particles of feldspar and quartz, the feldspar melting first and providing a glass matrix for the quartz. Dental porcelain is produced by mixing ceramic powder (a mixture of quartz, kaolin, pigments, opacifiers, a suitable flux, and other substances) with distilled water. (From Jablonski's Dictionary of Dentistry, 1992)Materials Testing: The testing of materials and devices, especially those used for PROSTHESES AND IMPLANTS; SUTURES; TISSUE ADHESIVES; etc., for hardness, strength, durability, safety, efficacy, and biocompatibility.Dental Stress Analysis: The description and measurement of the various factors that produce physical stress upon dental restorations, prostheses, or appliances, materials associated with them, or the natural oral structures.Metal Ceramic Alloys: The fusion of ceramics (porcelain) to an alloy of two or more metals for use in restorative and prosthodontic dentistry. Examples of metal alloys employed include cobalt-chromium, gold-palladium, gold-platinum-palladium, and nickel-based alloys.Mitral Valve: The valve between the left atrium and left ventricle of the heart.Heart Valve Diseases: Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).Cognition Disorders: Disturbances in mental processes related to learning, thinking, reasoning, and judgment.Kidney Failure, Chronic: The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.Mild Cognitive Impairment: A prodromal phase of cognitive decline that may precede the emergence of ALZHEIMER DISEASE and other dementias. It may include impairment of cognition, such as impairments in language, visuospatial awareness, ATTENTION and MEMORY.Renal Insufficiency: Conditions in which the KIDNEYS perform below the normal level in the ability to remove wastes, concentrate URINE, and maintain ELECTROLYTE BALANCE; BLOOD PRESSURE; and CALCIUM metabolism. Renal insufficiency can be classified by the degree of kidney damage (as measured by the level of PROTEINURIA) and reduction in GLOMERULAR FILTRATION RATE.Kidney: Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.Neuropsychological Tests: Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury.
... and replacement of the ligament with a fascial prosthesis has a good prognosis for return to full function. The menisci are the ... The situation is dissimilar to that seen in human athletes where overextension of the joint stretches the CrCL to failure, ... Return to normal function is rapid, with most dogs having good use of the leg and a normal appearing gait within 3-4 months; ... It functions to stop cranial (anterior) movement of the tibia with respect to the femur, hyperextension of the stifle joint and ...
3. Biological failures: These can occur due to caries in the tooth (one of the commonest causes of crown and bridge failures) ... Assess the prosthesis on the master casts and identify the cause of any problems if present. A period of temporary cementation ... They can usually be completed in only two dental appointments, restore the tooth back to full chewing function, require no ... 2. Mechanical failures: These failures can occur due to loss of retention of the bridge due to improper cementation, ...
By 2010, reports in the orthopaedic literature increasingly cited the problem of early failure of metal on metal prostheses in ... When these are relieved with replacement surgery and normal motion and function are restored, the body feels that the limb is ... The most commonly used prosthesis designs are the Austin Moore prosthesis and the Thompson Prosthesis. More recently a ... The original prosthesis he designed was a proximal femoral replacement, with a large fixed head made of the cobalt-chrome alloy ...
... characteristic of heart valve prostheses is that regurgitation is minimal over the full range of physiological heart function ( ... While this has been a relatively rare occurrence, in 1988 the Edwards-Duramedics bileaflet had 46 reported failures in 20,000 ... the other can still function. However, if the hinge is blocked, both leaflets will stop functioning.[citation needed] Because ... No heart valve prostheses can currently self-repair but replacement tissues grown using stem cell technology may eventually ...
All MHV function in the human body creating a unique sound effects and vibration. Patients with mechanical valves must take ... But they will not be hurt, and Skumin syndrome will continue to hang over the human psyche with a heart valve prosthesis. The ... It is used to treat Skumin syndrome, light forms of heart failure, anxiety and sleep disorders, and asthenia. The medicine is ... For psychological rehabilitation, Skumin improved psychological function by calming the nervous system, enhancing relaxation, ...
The test apparatus is switched on and the prosthesis functions perfectly. Literally crying with relief, Helena calls Verdeschi ... Disgusted with this latest failure, he proceeds to the Medical Centre, where Michelle is confined to bed. The geologist barges ... The Dorfman cardiac prosthesis, perfected in 1987, was designed to have valves coated with tiranium. However, the Alphans' ... Early drafts of the script had Helena and Ben Vincent referring to their prosthesis as the 'Bergman' heart, as it was identical ...
0.35 percent Progressive vertical bone loss but still in function (Peri-implantitis): 8.5 percent Failure after the first year ... The dental prosthesis can be disconnected from the implant abutments with finger pressure by the wearer. To enable this, the ... Long-term failures are due to either loss of bone around the tooth and/or gingiva due to peri-implantitis or a mechanical ... Success or failure of implants depends on the health of the person receiving the treatment, drugs which affect the chances of ...
investigate medical equipment failures and provide advice about the purchase and installation of new equipment. • develop and ... Some but not all of the healthcare technology management professional's functions are: Equipment Control & Asset Management ... design and develop engineered therapies (for example, neural-integrative prostheses). • adapt computer hardware or software for ... systems physiology - studying how systems function in living organisms. • therapeutic engineering - developing and discovering ...
Failure to meet cost targets will lead to substantial losses for an organisation. In addition, with global competition, the R&D ... Medical devices that pertain to class I (on condition they do not require sterilization or do not measure a function) can be ... and prostheses. Items as intricate as housings for cochlear implants are manufactured through the deep drawn and shallow drawn ... in man or other animals Intended to affect the structure or any function of the body of man or other animals, and does not ...
... leading to early failure of the valvular function. Aortic valve replacement using a homograft was first performed over 50 years ... Biological prostheses, i.e. pericardial heart valves of animal origin (xenogenic), offer a viable alternative. However, in ... 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 ...
... so that more functions can be controlled simultaneously and more degrees of freedom can be gained in prosthesis control. This ... With extraordinary successes came certain risks and failures. The general risks of the surgery, in addition to standard risks ... and a hand capable of opening and closing with wrist flexion/extension function. The elbow and hand functions were driven by ... that are not normally involved with lower arm functions to control lower arm functions (such as opening and closing hands). The ...
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 ... since the thick layers of fibrous encapsulation may prevent the implant from performing the desired functions. Bacteria may ... The many examples of implant failure include rupture of silicone breast implants, hip replacement joints, and artificial heart ...
Vitek-Kent Proplast-Teflon partial & total prosthesis were manufactured from 1982 to 1990 in Houston TX. TMJ prostheses became ... Its function is to lubricate and maintain the internal environment of the joint. It has been used for arthritis in the knee and ... but reports of widespread mechanical failure with wear, tearing, and fracture began to surface. Debris and fragments led to an ... Prosthetic TMJ placement surgery is used as a last resort to manage severe pain and restricted function due to TMJ disorders. ...
In the case of an outer ear trauma, a craniofacial prosthesis may be necessary. The most successful function-replacing ... The artificial liver is designed to serve as a supportive device, either allowing the liver to regenerate upon failure, or to ... to duplicate or augment a specific function or functions so the patient may return to a normal life as soon as possible. The ... Prostheses can roughly be categorized as upper- and lower-extremity and can take many shapes and sizes. New advances in ...
When left-sided heart failure is the cause, the individual is instructed to decrease intake of salt. Medications in this case ... In terms of treatment for tricuspid insufficiency prosthetic valve substitutes can be used, though artificial prostheses may ... Haddad, François; Doyle, Ramona; Murphy, Daniel J.; Hunt, Sharon A. (2008-04-01). "Right Ventricular Function in Cardiovascular ... Such dilatation is most often the result left heart failure (of any cause) or pulmonary hypertension. Dilation leads to ...
Since the aortic valve is very sensitive in its form and function to any changes of the aortic dimensions the operation will in ... First attempts at aortic valve repair were undertaken even before heart valve prostheses were developed. In 1912 the French ... and connective tissue disease The goal of the operation is the improvement of life expectancy and treatment of heart failure as ... Irrespective of the major reason for surgery the main goal of the operation is to restore aortic valve function. B) Repair ...
Pulmonary function testing reveals either restrictive pattern or a mixed obstructive/restrictive pattern. While x-rays, HRCT ... prosthesis, surgical stabilization. Lymphangiomatosis can occur at any age, but the incidence is highest in children and ... late findings include liver failure. Symptoms of lymphangiomatosis in the skeletal system are the same as those of Gorham's ... thus increasing their inability to function properly. Accumulations of fluid and chyle are named based on their contents and ...
Retinal prostheses for restoration of sight to patients blinded by retinal degeneration are being developed by a number of ... Trial was put on hold due to repeated failures. The Retina Implant AG device contains 1500 microphotodiodes, allowing for ... All patients reported gaining a perception of light and discrete phosphenes, with the visual function of some patients ... By relying on the function of the remaining retinal layers, subretinal implants allow for normal inner retinal processing, ...
... orbital prosthesis), or nose (nose prosthesis) Bone anchored limb prostheses Bone anchored hearing conduction amplification ( ... If the implant rotates under the pressure it is deemed a failure and removed. This method comes at the risk of fracturing bone ... Gösta Larsson died in 2005, with the original implants still in place after 40 years of function. In the mid-1970s Brånemark ... Dental implants are by far the main field of application Retention of a craniofacial prosthesis such as an artificial ear (ear ...
A breast implant is a prosthesis used to change the size, shape, and contour of a woman's breast. In reconstructive plastic ... Nevertheless, the more complex design of the double-lumen breast implant suffered a device-failure rate greater than that of ... Small-sized breast implants, and submuscular implantation, cause fewer breast-function problems; however, it is impossible to ... To reduce the rotation of the emplaced breast implant upon the chest wall, the model 1963 prosthesis was affixed to the implant ...
... patients are also receiving treatments to slow down the decline of their renal function, such as angiotensin II ... Emekli, U; Tümerdem, B; Demiryont, M (2002). "Rupture of a silicone gel mammary prosthesis and amyloidosis: A case report". ... In general, old age, reduced serum albumin concentration, end stage renal failure, and sustained elevated SAA concentration are ... Kiacta - (eprodisate disodium) is in 2015 being evaluated as a protector of renal function in AA amyloidosis. Kiacta, inhibits ...
It is important for a structural engineer to be able to classify a structure by either its form or its function, by recognizing ... This information is then compared to criteria that indicate the conditions of failure. Advanced structural analysis may examine ... prostheses and biological tissue. Structural analysis employs the fields of applied mechanics, materials science and applied ... in which he examined the failure of simple structures 1660: Hooke's law by Robert Hooke 1687: Isaac Newton published " ...
42.*Marbach, J.J., Psychosocial Factors for Failure to Adapt to Dental Prostheses. In Zinner, I., ed. Semiprecision Attachments ... 61.Marbach, J.J., Raphael, K.G., Bartlett, J.A., Lattinelli, J.C., and Keller, S.E. Immune Function and Myofascial Face Pain. ... 57.*Marbach, J.J., Schleifer, S.J., and Keller, S.E., Facial Pain, Distress, and Immune Function. Brain, Behavior, and Immunity ... 36.*Marbach, J.J., Keller, S.E., and Schleifer, S.J., Temporomandibular Pain (TMPDS) and Immune Function. Presented at the ...
The 70 cc is used for biventricular heart failure in adult men, while the 50cc is for children and women. As good results with ... Another major advantage of a VAD is that the patient keeps the natural heart, which may still function for temporary back-up ... Orthotopic cardiac prosthesis for two-staged cardiac replacement. Am J Cardio 1969; 24:723-730. "Treasures of American History ... The Carmat device, unlike previous designs, is meant to be used in cases of terminal heart failure, instead of being used as a ...
To reduce the rotation of the emplaced breast-implant upon the chest wall, the model 1963 prosthesis was affixed to the implant ... Nevertheless, the more complex design of the double-lumen breast-implant suffered a device-failure rate greater than that of ... Small-sized breast implants, and submuscular implantation, cause fewer breast-function problems; however, women have ... Nonetheless, in the 1990s, the saline breast implant was the prosthesis usual for breast augmentation surgery, because of the U ...
Failure to meet cost targets will lead to substantial losses for an organisation. In addition, with global competition, the R&D ... They aim at ensuring a high level of protection of human health and safety and the good functioning of the Single Market. These ... and prostheses. Items as intricate as housings for cochlear implants are manufactured through the deep drawn and shallow drawn ... Medical devices that pertain to class I (on condition they do not require sterilization or do not measure a function) can be ...
Furthermore, failure to identify letters in Test II with the scrambled mode (not better than device off) showed that letter ... Artificial vision: needs, functioning, and testing of a retinal electronic prosthesis. Prog Brain Res 2009;175:317-32. ... The Argus II epiretinal prosthesis system allows letter and word reading and long-term function in patients with profound ... The Argus II epiretinal prosthesis system allows letter and word reading and long-term function in patients with profound ...
... prostheses should be used with caution in eyes with SJS and other immune causes as there is an increased retention failure rate ... 5. Hatch KM, Dana R. The structure and function of the limbal stem cell and the disease states associated with limbal stem cell ... Limbal Stem Cell Deficiency & Eye Prosthesis April 7, 2016 The corneal epithelium is a stratified squamous epithelium from ... In a well-made prosthetic eye, tears should flow evenly across the prosthesis just as they do over the natural eye - in a sheet ...
prosthesis problems. New penile prosthesis styles are dependable, but in uncommon instances the prostheses might failure. ... In this article, we all examine the types of penile prostheses obtainable and how they function. We all also have a look at ... Inflatable Penile Prosthesis Penile prostheses are items positioned inside the male organ to enable guys with erectile failure ... Types of penile prostheses. Right now there are two main types of penile prostheses:. Inflatable penile prosthesis. Inflatable ...
prosthesis complications. New pennis prosthesis styles are dependable, but in uncommon situations the prostheses may failure. ... Types of prostheses. Cosmetic surgeons within an operating theatre functioning on the penile prosthesis. There are three ... You will find two primary types of penile prostheses, semirigid and inflatable. Each kind of male organ prosthesis functions in ... Types of penile prostheses. There are two main types of penile prostheses:. Inflatable male organ prosthesis. Inflatable ...
Bartley J, Zimmerman WB, Dhabuwala C. Inflatable penile prosthesis and salvage protocol for mechanical failure: is it really ... Comparison of satisfaction rates and erectile function in patients treated with sildenafil, intracavernous prostaglandin e1 and ... Radial dilatation in the insertion of the multi-component inflatable penile prosthesis. Br J Urol. 1995;75(6):792. [CrossRef] [ ... Reservoir herniation as a complication of three-piece penile prosthesis insertion. Urology. 2001;57(1):142-145. [CrossRef] [ ...
acute renal failure. *dysthyroidal function. *metallic prosthesis. *unable to understand the informed consent document ... Renal Function Assessment in HIV Patient (HIVERS). The safety and scientific validity of this study is the responsibility of ... Role of bone density on validity of renal function markers in HIV patients [ Time Frame: during the study ]. ... Guidelines have suggested that renal function should be regularly assessed in HIV patients to perform early diagnosis for ...
2009). "Artificial vision: needs, functioning, and testing of a retinal electronic prosthesis." Prog Brain Res 175: 317-332. [ ... 2005). "Cochlear implant soft failures consensus development conference statement." Otol Neurotol 26(4): 815-818. [PubMed] ... Part XV: Visual Prostheses *Introduction To Visual Prostheses by Eduardo Fernandez and Richard Normann ... Regardless of the differences in the approaches, all vision prosthesis (with the exception of subretinal prostheses and the ...
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 ...
Most prostheses last many years. Indications for surgery include persistent pain, poor function, and anatomical evidence of ... Surgical treatment. The most important surgical treatment for osteoarthritis and joint failure is replacement. Many different ... The function of compounds like corticosteroids is to try to slow the disease down or make it go into remission. This is done by ... The function of compounds like corticosteroids is to try to slow the disease down or make it go into remission. This is done by ...
Prosthesis Failure. Range of Motion, Articular. Recovery of Function. Reoperation. Time Factors. Treatment Outcome. ... Hip Prosthesis. Humans. Interviews as Topic. Male. Middle Aged. Osteoarthritis, Hip / etiology, physiopathology, surgery*. Pain ... with cerebral palsy and secondary osteoarthritis of the hip THR can provide long-term pain relief and improved function. The ...
... ceramic dental and orthopedic prosthesis. The functionally graded glass/ ... These maps graphically summarize the relative timing of different failure modes as a function of load and number of fatigue ... The prosthesis may be, for instance, an aesthetic and damage-resistant ceramic orthopedic prosthesis, orthopedic stems, ... A medical or dental prosthesis according to claim 19 wherein the ceramic comprises alumina. 22. A medical or dental prosthesis ...
These effects of prosthesis-patient mismatch were not observed in patients with normal preoperative left ventricular function. ... decreased freedom from heart failure symptoms or heart failure death (odds ratio of 5.1 at 3 years after aortic valve ... Data on whether the clinical effect of prosthesis-patient mismatch depends on left ventricular function at the time of aortic ... Patients with impaired left ventricular function represent a critical population in whom prosthesis-patient mismatch should be ...
Knee function is more normal with much better movement than total knee replacement. Failure rates are slightly higher than ... There are several unicompartment knee prostheses available. The Oxford prosthesis is used most widely. This has a metal femur ... 2Stem cell usage in the restoration of ligament and cartilage function. Novel biological scaffolds will allow stem cells to be ... Unicompartment knee replacements have several advantages: less blood loss; shorter operation; less costly prosthesis; shorter ...
... the valve prosthesis being configurated as an open ring and covered with a double velour fabric having a laterally projecting ... fabric appendage for simultaneously facilitating suturing the prosthesis in place and improving tissue infiltration. ... An improved valve prosthesis for mitral and tricuspid heart valves, ... from its secured position causing at least partial failure of the prosthesis and risking interference with valve function. ...
Retention of certain metabolites in the blood may contribute to cognitive impairment in patients with kidney failure, revealed ... Acute Renal Failure. Acute renal failure is the sudden cessation of the functioning of kidneys, that can be due to reduced ... Chronic Renal Failure. Chronic renal failure or chronic kidney disease is progressive loss in kidney function. The change is ... Millions of Kidney Failure Patients Die for Lack of Treatment. A new study finds that more than 2 million kidney failure ...
... and apparatus provide an effective frictional lock between the stent and the luminal wall to inhibit migration and/or failure ... In another aspect of the invention, methods and apparatus are provided for securing luminal prostheses to the luminal walls at ... In one aspect of the invention, luminal prostheses are designed to negotiate curves, bends and other irregularities in body ... In addition, the luminal prostheses of the present invention have sufficient flexibility to bend and articulate so as to ...
Another problem with the failure of a prosthesis is due to a deteriorating jaw bone. When an extracted or otherwise missing ... The material comprising the filler functions as an ideal growing environment for newly formed bone. By using the filler, new ... As described above, one problem associated with the failure of a prosthesis is the inability of the surrounding bone to support ... The new bone growth can be used to support a prosthesis or denture with enhanced stability compared to a prosthesis or implant ...
Finally, erectile function is difficult to achieve. The radial forearm flap requires an inflatable penile prosthesis, with a ... considerable failure/revision rate. When a latissimus dorsi myocutaneous free flap is used, sexual intercourse is possible by ... C. Klein and B. B. Gorzalka, "Sexual functioning in transsexuals following hormone therapy and genital surgery: a review," ... placement of testicular prostheses, and phalloplasty. For persons without former abdominal surgery, the laparoscopic technique ...
Low-flow aortic valve prosthesis. As for low-flow, low-gradient AS, VSE may be used for prosthesis dysfunction grading in ... Longitudinal function at rest and on exertion may also aid in the detection of early LV systolic dysfunction (8,30). ... Mean gradient increase and calculated functional valve area failure to increase during VSE suggest severe AS. The existence of ... patient-prosthesis mismatch or prosthesis stenosis). A mean gradient rise is significant if it is at least ,20 mm Hg for ...
prosthesis failure. Anesthesia Problems can arise when the anesthesia given during surgery causes a reaction with other drugs ... In addition, anesthesia can affect lung function because the lungs dont expand as well while a person is under anesthesia. Be ... Prosthesis Failure One of the problems that occurs with artificial replacements is that they can fail. The older silicon-type ... The prosthesis is inserted into the ends of both finger bones.. When the new joint is in place, the surgeon wraps the joint ...
The valve function is checked to make certain it is oriented optimally. If further rotation is necessary, it may be necessary ... However, tissue leaflets can become calcified over time distorting the leaflet shape and ultimately leading to failure of the ... Sutureless heart valve prosthesis. US6358278. 24 Sep 1999. 19 Mar 2002. St. Jude Medical, Inc.. Heart valve prosthesis with ... Heart valve prosthesis. US20040122516 *. 20 Dic 2002. 24 Jun 2004. Fogarty Thomas J.. Biologically implantable prosthesis and ...
9183306 - Congestive heart failure in old age: prevalence, mechanisms and 4-year prognosis in the.... 15736566 - Long-term ... 24926326 - Reduction of left ventricular longitudinal global and segmental systolic functions in p.... 22356536 - The ... performance of prostheses in mitral valve replacement.. ...
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- ... It is planned to follow up this patients cohort to the fifth year of function in order to evaluate the success of the ... Implant failure: evaluated as implant mobility and removal of stable implants dictated by progressive marginal bone loss or ...
An intraluminal prosthesis comprising polymeric material is immersed in a mixture of carrier fluid and pharmacological agent(s ... Intraluminal prostheses and methods of impregnating same with pharmacological agents for delivery within a body of a subject ... and pharmacological agent is pressurized for a time sufficient to cause the polymeric material of the intraluminal prosthesis ... A stent functions as scaffolding to structurally support the vessel wall and thereby maintain luminal patency, and are ...
Prosthesis Design. *Prosthesis Failure. *Range of Motion, Articular. *Recovery of Function. *Reoperation ... We used the Harris hip score (HHS) to assess pain and function. We evaluated femoral stem fixation and stability with the score ... We used the Harris hip score (HHS) to assess pain and function. We evaluated femoral stem fixation and stability with the score ... whether this stem design was associated with a low incidence of thigh pain and provided durable fixation and high function. ...
  • For its part, Ottobock developed the C-Leg, which employs inductive charging of the lower-limb prosthesis with a magnetic attachment at a point behind the knee. (mwrf.com)
  • We conclude that running on modern, lower-limb sprinting prostheses appears to be physiologically similar but mechanically different from running with intact limbs. (mit.edu)
  • Abstract-- Observations in the field of lower limb prosthetic rehabilitation have shown that several transfemoral prostheses show signs of wear on some components of the knee unit. (va.gov)
  • Historically, the development of lower limb prostheses took place for many years without any form of structural testing other than field use by the person with amputation. (va.gov)
  • However, with the introduction of modular lower limb prosthetic systems and the application of engineering principles to prosthesis design, it became desirable to establish the safety of the product prior to commencing mass production. (va.gov)
  • Following the ISPO Philadelphia meeting in 1977 (1), the United Kingdom Department of Health and Social Security started a program of structural testing of all new lower limb prostheses, and, in parallel, it introduced a system of records to monitor all defects and adverse events occurring in the field. (va.gov)
  • Dr Takaaki Chin, President, International Society for Prosthetics and Orthotics (ISPO), Japan, who focused on "Prosthetic walking for older lower limb amputees" introduced at first that the number of lower limb amputations globally for older populations has increased in recent years with critical limb ischemia as the cause secondary to peripheral circulatory failure due to arteriosclerosis and diabetes. (who.int)
  • The present invention provides methods and apparatus for deploying luminal prostheses, such as stents, grafts, or stent-grafts, to luminal walls at a target site within an anatomical lumen. (google.com)
  • In addition, the luminal prostheses of the present invention have sufficient flexibility to bend and articulate so as to substantially conform to a tortuous body lumen at the target site, which enhances the post-deployment performance of the stent. (google.com)
  • These methods and apparatus provide an effective frictional lock between the stent and the luminal wall to inhibit migration and/or failure of the stent. (google.com)
  • 7. The method of claim 1 wherein the prosthesis comprises groups of three rigid connecting structures extending between adjoining stent frames and uniformly spaced around the circumference of the stent frames. (google.com)
  • engaging the luminal wall with one or more anchor members of the stent frames to secure the prosthesis to the luminal wall. (google.com)
  • 10 . The method of claim 1 , wherein the intraluminal prosthesis is a stent. (google.com.au)
  • In these two patients, helical computed tomography showed stent failure. (elsevier.com)
  • All heart valve replacement procedures are regularly performed, and include those for the aortic valve as a ROSS operation or with stent prostheses. (leading-medicine-guide.com)
  • A bridge is a fixed dental restoration (a fixed dental prosthesis) used to replace a missing tooth (or several teeth) by joining an artificial tooth permanently to adjacent teeth or dental implants. (wikipedia.org)
  • Aseptic loosening is the most common mode of failure of knee implants. (hss.edu)
  • Instability may be the result of increased soft-tissue laxity (looseness), inadequate flexion of the implants, or improper positioning or alignment of the prosthesis. (hss.edu)
  • At the end of the 10-year period, 73% of the implants could be traced either as failed or in function, providing cumulative implant survival rates of 90.2% and 93.7% for the maxilla and mandible, respectively. (kuleuven.be)
  • A total of 213 osseointegrated titanium implants were placed in the maxilla and/or mandible, and 212 implants except one were well integrated and functioned. (nii.ac.jp)
  • Method and materials: Forty-five failed implants retrieved from 40 patients with no significant risk factors for implant failure (eg, history of smoking or diabetes) were examined by scanning electron microscopy. (quintpub.com)
  • All implants were placed by general dentists or periodontists in private practice and had functioned for an average of 4 years. (quintpub.com)
  • The aim of this work was to study the biomechanical behavior of an All-on-4 implant-supported prosthesis through a finite element analysis comparing 3 different tilt degrees of the distal implants. (allenpress.com)
  • Three-dimensional finite element models of an edentulous maxilla restored with a prosthesis supported by 4 implants were reconstructed to carry out the analysis. (allenpress.com)
  • The All-on-4 immediate-function approach to rehabilitate the fully edentulous jaw combines tilting and immediate-function techniques: 4 implants (2 straight medially and 2 tilted distally) are loaded with a full fixed prosthesis. (allenpress.com)
  • The apex of these implants and the rotation fulcrum are located in the canine region, and the implant platform emerges in the second premolar or first molar region, thereby providing satisfactory molar support for a full fixed prosthesis of 10 or 12 masticatory units, respectively. (allenpress.com)
  • Thus, placing implants parallel to anterior sinus walls with distal inclination 9 - 11 improves bone anchorage and increases polygonal area for prosthesis support, 11 , 12 while reducing the cantilever length and achieving a more favorable stress distribution in the bone. (allenpress.com)
  • Prostheses and implants. (scielo.br)
  • A wide variety of biological and synthetic grafts are now available-autologous, allograft, xenograft and synthetic prosthesis. (springer.com)
  • It might be possible to have patent grafts in the coronary position, if we could have fine basic small-diameter fabric prosthesis with good handling characteristics, excellent antithrombogenicity. (nii.ac.jp)
  • Chest reconstruction and enlargement of the thoracic cage by sternotomy and fixation with bone grafts or a methylmethacrylate prosthesis plate provides patients with the time needed for thoracic cage growth. (medscape.com)
  • 4. A method as in claim 1, further comprising the steps of first measuring the coronary sinus and then selecting an appropriately sized prosthesis prior to the inserting step. (freepatentsonline.com)
  • The application of imaging modalities in conditions such as valvular and coronary heart disease, heart failure, cardiomyopathies, peri-myocardioal disease, adult congenital heart disease and aortic disease, is also extensively considered. (oup.com)
  • Despite favorable results even among high-risk patients, SAVR is not performed in up to one-third of eligible patients, due to advanced age, comorbidities, previous cardiac surgery, depressed left ventricular function, concomitant coronary artery disease, and patient refusal ( 5-18 ). (onlinejacc.org)
  • Background Retinal prosthesis systems (RPS) are a novel treatment for profound vision loss in outer retinal dystrophies. (bmj.com)
  • Ideal prostheses would offer stable, long-term retinal stimulation and reproducible spatial resolution in a portable form appropriate for daily life. (bmj.com)
  • Retinal prosthesis systems (RPS) are a new treatment for profound vision loss in retinitis pigmentosa. (bmj.com)
  • The purpose of our study is to evaluate the biocompatibility of various polymers used as microelectrode arrays (MEAs) in retinal prostheses through in vitro cytotoxicity testing following a standardized method. (arvojournals.org)
  • The patellofemorotibial prosthesis, or total knee, includes a metal femoral component, a tibial component consisting of a polyethylene tibial bearing fixed to a metal tibial baseplate, and a patellar component consisting of a polyethylene patellar bearing fixed to a metal baseplate. (fda.gov)
  • In the parametric design, the prosthesis functional requirement is that the locking of stem to the femur head using cement should be strong enough to preclude unlocking during the life time of a patient and to prevent sliding of the implant into the bone-cement. (morebooks.de)
  • Revision operation (thorough debridement + removal of the prosthesis + antibiotic bone-cement implanting + local or systematical application of antibiotics + joint replacement) is the golden rule of treating joint infection. (alliedacademies.org)
  • After hospitalized, patient's erythrocyte sedimentation was 125 mm/h and C reactive protein 171.49 mg/L. Joint puncture, bacterial culture and drug-sensitivity test were performed before the surgery, and on Mach 29, 2015, focal debridement of the infected joint + removal of the prosthesis + antibiotic bone cement implanting + focal tube insertion occludes perfusion washing. (alliedacademies.org)
  • In conclusion, the clinical relevance and the prevention of PPM seem subordinate and to improve patient outcome, priority should be given to the design of a durable, non-thrombogenic prosthesis permitting easy handling and reducing surgical complexity. (avhandlingar.se)
  • The aim of these is to optimise surgical outcome with no compromise of sexual function and vaginal capacity. (springer.com)
  • In one aspect of the invention, luminal prostheses are designed to negotiate curves, bends and other irregularities in body passageways so as to facilitate deployment of the stents and to minimize injury to the luminal walls. (google.com)
  • Doppler US in the internal mammary veins allowed accurate evaluation of function of superior vena cava stents. (elsevier.com)
  • As part of this effort, RF/microwave technology is being analyzed, reviewed, and even adopted to aid in next-generation prosthetics, which will soon function in ways indistinguishable from natural limbs. (mwrf.com)
  • The cranial cruciate ligament (CrCL) is a ligament connecting the femur with the tibia, which functions to stabilise the canine stifle joint from the forces put on it during exercise and weight bearing. (wikipedia.org)
  • It functions to stop cranial (anterior) movement of the tibia with respect to the femur, hyperextension of the stifle joint and internal rotation of the tibia. (wikipedia.org)
  • The joint is not stable, however, when it is physically manipulated by attempting to move the tibia cranially.This contrasts with previous methods of CrCL repair which aimed to provide stability to the joint by replacing the ligament either with a fascial graft within the joint, or using a prosthesis made of nylon placed externally from the lateral fabella to a hole drilled in the tibial crest. (wikipedia.org)
  • The design of hip joint prostheses is a complex process that requires close co-operation between engineers and surgeons. (morebooks.de)
  • Although this groove provided stability, it effectively violated two of the three cardinal planes in which the joint functions, constraining it to the sagittal plane. (podiatrytoday.com)
  • The search for solutions that preserve joint function has led to a new generation of prosthesis with three components and more degrees of freedom. (scielo.br)
  • Other problems are difficulty with urination, local skin or joint infection, fracture of the bone during and after surgery, scarring and limitation of motion of the hip which can lead to prosthesis failure. (caregiverlist.com)
  • This guidance document was developed as a special controls guidance to support the reclassification of (1) the knee joint patellofemorotibial metal/polymer porous-coated uncemented prosthesis and (2) the knee joint femorotibial (uni-compartmental) metal/polymer porous-coated uncemented prosthesis into class II (special controls). (fda.gov)
  • Following the effective date of this final reclassification rule any firm submitting a 510(k) premarket notification for (1) the knee joint patellofemorotibial metal/polymer porous-coated uncemented prosthesis or (2) the knee joint femorotibial (uni-compartmental) metal/polymer porous-coated uncemented prosthesis will need to address the issues covered in the special control guidance. (fda.gov)
  • FDA believes that special controls, when combined with the general controls, will be sufficient to provide reasonable assurance of the safety and effectiveness of the knee joint patellofemorotibial and femorotibial metal/polymer porous-coated uncemented prostheses. (fda.gov)
  • This special control guidance document identifies the classification regulations and product codes for the knee joint patellofemorotibial and femorotibial metal/polymer porous-coated uncemented prostheses (Refer to Section 4 - Scope ). (fda.gov)
  • 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)
  • TEE confirmed a relatively small aortic annulus (1.9 cm) to Body Surface Area (BSA) (2.35 m 2 ), normal right ventricular function and size, mild tricuspid regurgitation, and mild diastolic dysfunction. (omicsonline.org)
  • In older adults, although PPM was associated with impaired regression of LV hypertrophy, PPM was not associated with increased mortality or heart failure symptoms (figure 1 ). (bmj.com)
  • Withhold the drug if systolic blood heart failure mental portions of the. (starfishandspider.com)
  • Use only with profound hypotension which set supplied by mechanisms of the headache heart failure onto tubing. (starfishandspider.com)
  • The SNS normally blockers observe for hypotension dizziness lightheadedness weakness peripheral edema headache heart failure pulmonary edema nausea. (starfishandspider.com)
  • Heart transplantation is undertaken if other options to treat heart failure are unavailable. (leading-medicine-guide.com)
  • Clarifying the therapy and compares it with friends, siblings, and the medical treatment of erectile function are discussed further in chapter 5, the ability to establish a current relational context could present as mentally healthier and more frequent, or more prostate cells , or prevent the degeneration of nnos-containing neurons in the spinal cord and then tightened and left dorsal nerves of the device inflates on its use is warranted. (hyperbaricnurses.org)
  • Several techniques for transferring orgasmic experiences to be solely a means of restoring erectile function the prosthesis of 74. (hyperbaricnurses.org)
  • Is blue erectile into dysfunction of to failure able it the? (guiavisitmadrid.com)
  • Sildenafil has no necrosis necrotizing rod and abscesses that can affect erectile function. (west.net)
  • In another aspect of the invention, methods and apparatus are provided for securing luminal prostheses to the luminal walls at a target site within an anatomical lumen. (google.com)
  • Current three-part prostheses [ 6 , 14 , 15 , 17 , 37 - 40 ] use a more or less natural-like convex surface for the talar component and a non-anatomical flat surface for the tibial component. (omicsonline.org)
  • We asked whether this stem design was associated with a low incidence of thigh pain and provided durable fixation and high function. (nih.gov)
  • However, until now, no biomechanical study has shown the efficacy of an alloplastic cord and its fixation device in providing sufficient stability and endurance in daily life-activity until newly formed scar tissue can take over this function. (hindawi.com)