| 摘要 |
To do a total replacement of the hip joint, complete access to the hip joint is achieved through separation of the trochanter, which protrudes from the upper portion of the upper leg bone (the femur) from the rest of the leg, together with dislocation of the hip joint itself. After dislocation the femoral ball is reamed down just enough to accommodate a hemispherical-hollow cap or shell which has approximately the same outside diameter as the patients existing femoral ball prior to reaming. Upon completion of the reaming process the femoral ball remains hemispherical with its diameter and surface reduced by from 4 mm to 5 mm in order to accommodate the metal alloy cap.
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