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Hip replacement is one of the most common orthopaedic operations, though patient satisfaction varies widely. Approximately 58% of total hip replacements are estimated to last 25 years. The average cost of a total hip replacement in 2012 was $40,364 in the United States, and about $7,700 to $12,000 in most European countries.
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 ...
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]
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).
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 ).
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.