title: Minimum 5-year results of modular metal-on-metal total hip arthroplasty.
abstract: This study reports minimum 5-year results of 95 hips implanted with a Pinnacle (DePuy, Warsaw, Ind) modular metal-on-metal acetabular prosthesis. Clinical scores such as the Harris Hip and Western Ontario and McMaster Universities Arthritis Index revealed excellent clinical outcomes at mean 6-year follow-up. With the use of large-diameter femoral heads, dislocation was rare, occurring in only 1 hip. Moreover, no acetabular and only 3 femoral osteolytic lesions were detected. Kaplan-Meier survivorship at 7 years after arthroplasty was 97.8% for the total hip arthroplasty construct and 100% for the acetabular shell. No unexplained pain or other complication attributable to wear debris or the metal-on-metal articulation was observed. These findings indicate that total hip arthroplasty with this specific modular metal-on-metal bearing performed well in a high-demand population at midterm follow-up.
authors: Orthopaedic Center of the Rockies, Fort Collins, CO 80525, USA.
authors: Kirk A
authors: KA
authors: Kindsfater
authors: Christi J
authors: CJ
authors: Sychterz Terefenko
authors: Thomas A
authors: TA
authors: Gruen
authors: Cynthia M
authors: CM
authors: Sherman
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006617:Hip Dislocation / Q000453:epidemiology; D006621:Hip Joint / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D015994:Incidence; D053208:Kaplan-Meier Estimate; D008137:Longitudinal Studies; D008297:Male; D008670:Metals; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010014:Osteolysis / Q000453:epidemiology; D011446:Prospective Studies; D011474:Prosthesis Design; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D008670:Metals