title: Long-term results for the uncemented Zweymuller/Alloclassic hip endoprosthesis. A 15-year minimum follow-up of 320 hip operations.
abstract: A follow-up study of 15 (15-17) years of 320 consecutive Zweymuller total hip arthroplasties is presented. Age at surgery was 67 (29-99) years. A total of 164 (51.3%) patients had died. Clinical and radiological examinations were available for 97 (30.3%), phone interviews and radiological examinations for 4 (1.3%) hips, and phone follow-ups for 49 (15.3%). There were 6 (1.9%) patients who were lost to follow-up. The Harris Hip Score results in a median value of 88. According to the Kaplan-Meier method, a survival rate of the cup/inlay of 98% (95% confidence interval, 95%-99%) after 17 years was achieved. For the stem/head, the survival rate was 98% (95% confidence interval, 94%-99%). In 95.2% of patients, no operative revision was required. The rate of aseptic loosening was 2% for the acetabular and 1% for the femoral component.
authors.affiliation: University Hospital Tuebingen, Clinic for Orthopedics, Tübingen, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Suckel
authors.forename: Friedrich
authors.initials: F
authors.lastname: Geiger
authors.forename: Lothar
authors.initials: L
authors.lastname: Kinzl
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Wulker
authors.forename: Manfred
authors.initials: M
authors.lastname: Garbrecht
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000502:physiology / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011475:Prosthesis Failure; D011859:Radiography; D016896:Treatment Outcome