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The procedure is performed by removing the head of the femur and replacing it with a metal or composite prosthesis. The most commonly used prosthesis designs are the Austin Moore and Thompson prostheses. A composite of metal and HDPE that forms two interphases (bipolar prosthesis) can be used.
Hip resurfacing has been developed as a surgical alternative to total hip replacement (THR). The procedure consists of placing a cap (usually made of cobalt-chrome metal), which is hollow and shaped like a mushroom, over the head of the femur while a matching metal cup (similar to what is used with a THR) is placed in the acetabulum ( pelvis ...
Materials. Some ceramic materials commonly used in joint replacement are alumina (Al 2 O 3 ), zirconia (ZrO 2 ), silica (SiO 2 ), hydroxyapatite (Ca 10 (PO 4) 6 (OH) 2 ), titanium nitride (TiN), silicon nitride (Si 3 N 4 ).
Eponymous implants and their uses. Austin-Moore prosthesis for fracture of the neck of the femur [13] Baksi's prosthesis for elbow replacement [14] Charnley prosthesis for total hip replacement [15] Condylar blade plate for condylar fractures of the femur [16] Ender's nail for fixing intertrochanteric fracture [17]
Bone cement is considered a reliable anchorage material with its ease of use in clinical practice and particularly because of its proven long survival rate with cemented-in prostheses. Hip and knee registers for artificial joint replacements such as those in Sweden and Norway [2] clearly demonstrate the advantages of cemented-in anchorage.
These new materials are cross-linked with gamma or electron beam radiation (50–105 kGy) and then thermally processed to improve their oxidation resistance. Five-year clinical data, from several centers, are now available demonstrating their superiority relative to conventional UHMWPE for total hip replacement (see arthroplasty).
This discovery caused him to begin looking for a slippery substance that could be used for the socket of a total hip replacement operation. Polytetrafluorethylene (PTFE, also known as Teflon) seemed to meet this requirement. After some apparently successful experiments with the material, he adopted it for his hip replacement surgeries.
Lower extremity prosthetics describe artificially replaced limbs located at the hip level or lower. In the prosthetics industry, a trans-tibial prosthetic leg is often referred to as a "BK" or below the knee prosthesis. Prostheses are manufactured and fit by clinical Prosthetists.
For the last 45 years, [when?] the most successful and common form of arthroplasty is the surgical replacement of arthritic or destructive or necrotic joint or joint surface with a prosthesis. [ medical citation needed ] For example, a hip joint that is affected by osteoarthritis may be replaced entirely ( total hip arthroplasty ) with a ...
A titanium hip prosthesis, with a ceramic head and polyethylene acetabular cup. Ceramics are now commonly used in the medical fields as dental and bone implants. [8] [9] Surgical cermets are used regularly. Joint replacements are commonly coated with bioceramic materials to reduce wear and inflammatory response.