Treatment of primary osteoarthritis of the hip. A comparison of total joint and surface replacement arthroplasty.

摘要: Of 285 total hip arthroplasties (260 patients) performed for primary osteoarthritis during a six-year period, 135 were resurfaced using Tharies prosthesis (total articular replacement with internal eccentric shells) and 150 treated the Trapezoidal-28 replacement. From each of these two groups 100 hips (ninety-one patients in group eighty-six group) that had been followed to seven years evaluated at time follow-up accordance predetermined protocol. The younger than (average ages, fifty-eight sixty-six years), included more men (sixty compared thirty-five), active postoperatively. average was forty-seven months joint-replacement thirty-eight surface group. At ratings pain, walking, function according University California Los Angeles 10-point scale clinical results identical groups. Heterotopic ossification (Brooker grade III or IV) developed after thirteen twenty-two arthroplasties. Radiographs made six twelve final showed incidence radiolucencies about acetabular component higher resurfacing group: fifty-seven complete radiolucent lines an thirty-six months. There three failures hematogenous staphylococcal deep infection required Girdlestone procedure, femoral stem fracture revision, loosening which revision performed. also one dislocation, successfully by closed reduction. Similarly, there failures: loose components, revised successfully, necessitated joint arthroplasty. Multivariate stepwise regression analysis factors affected extent width adversely were: any visible months, high level physical activity arthroplasty, thin superior cement mantle.(ABSTRACT TRUNCATED AT 400 WORDS)