title: Reconstruction of severe acetabular bone-deficiency: the Burch-Schneider antiprotrusio cage in primary and revision total hip arthroplasty.
abstract: Ninety Burch-Schneider antiprotrusio cages in 87 patients implanted in primary and revision total hip arthroplasty were analyzed. Sixty-seven hips (64 patients) could be examined clinically and radiologically after an average of 50.3 months (minimum 23.6, maximum 131.0 months). Twenty patients (20 hips) died in interim and 3 patients (3 hips) were not available for follow-up. Of the 90 Burch-Schneider antiprotrusio cages, 4 had to be removed and 8 further cages were considered definitely loose. The survival rate is 93.4% (95% confidence interval, 74.3%-96.7%) after 131 months if the endpoint "cage explantation" is used. The average Harris Hip Score was improved from 28.2 preoperatively to 73.5 points at the time of follow-up. Radiolucent lines were often found in the Charnley/DeLee's zones II and III. In contrast, osteolyses were seldom seen.
authors.affiliation: Orthopaedic Department, Allgemeines Krankenhaus Linz, Austria.
authors.forename: Herwig
authors.initials: H
authors.lastname: Pieringer
authors.forename: Vinzenz
authors.initials: V
authors.lastname: Auersperg
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Böhler
mesh_terms: D000077:Acetabulum / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods* / Q000401:mortality; D005500:Follow-Up Studies; D006617:Hip Dislocation / Q000453:epidemiology; D006801:Humans; D011183:Postoperative Complications / Q000453:epidemiology; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation / Q000706:statistics & numerical data; D016019:Survival Analysis; D016896:Treatment Outcome