| 摘要 |
A total hip arthroplasty includes a femoral prosthesis and an acetabular prosthesis. The femoral prosthesis has a ball on a neck portion of a femoral component including a noncircular femoral body a portion coated with a porous bone ingrowth coating for noncemented fixation within a resected patient femur. The femoral body is tapered, to include a combination of a medial-lateral taper, an anterior-posterior taper, and a lateral-to-medial taper for secure seated fixation into the medullary canal of a resected femur. The acetabular prosthesis includes a hemispherical metal cup having a porous bone ingrowth surface for secure fixation within a prepared patient acetabular socket. A bearing insert is initially seated within the acetabular cup in a "trial" position without locking to determine cup placement and freedom of leg movement, and thereafter reseated in a "lock" position. A femoral broach and a bone punch tool are also provided. |
