BACKGROUND: Acetabular revision in total hip arthroplasty (THA), especially for loose or migrated cup components with collateral bone loss, remains a great surgical challenge. The aim should always be a functionally favorable reconstruction of the rotation center with sufficient load capacity of the acetabulum. Commonly used implants in Europe are the Mueller ring, the Ganz ring, and the Burch-Schneider cage. PATIENTS AND METHODS: We report our results of 298 patients (298 hips) with a median follow-up period of 4 (range 0-17) years in a retrospective series. RESULTS: Follow-up data were available in 224 cases (75%). A radiographic examination was performed in 176 (59%) patients. Another 54 patients (18%) had died in the follow-up period, while another three patients (1%) were lost to follow-up. Eighteen patients (16%) underwent re-revision, in nine cases for aseptic loosening and in the remaining nine cases for infection. In seven additional cases (2%), radiological and clinical failure was found during follow-up. The overall survival rate was 94% at 5 years and 89% at 8 years. CONCLUSION: Revision THA using acetabular reinforcement rings results in acceptable midterm results. However, septic complications and lysis of the bone graft with consecutive failure of the reinforcement ring remain problematic.
BACKGROUND: Acetabular revision in total hip arthroplasty (THA), especially for loose or migrated cup components with collateral bone loss, remains a great surgical challenge. The aim should always be a functionally favorable reconstruction of the rotation center with sufficient load capacity of the acetabulum. Commonly used implants in Europe are the Mueller ring, the Ganz ring, and the Burch-Schneider cage. PATIENTS AND METHODS: We report our results of 298 patients (298 hips) with a median follow-up period of 4 (range 0-17) years in a retrospective series. RESULTS: Follow-up data were available in 224 cases (75%). A radiographic examination was performed in 176 (59%) patients. Another 54 patients (18%) had died in the follow-up period, while another three patients (1%) were lost to follow-up. Eighteen patients (16%) underwent re-revision, in nine cases for aseptic loosening and in the remaining nine cases for infection. In seven additional cases (2%), radiological and clinical failure was found during follow-up. The overall survival rate was 94% at 5 years and 89% at 8 years. CONCLUSION: Revision THA using acetabular reinforcement rings results in acceptable midterm results. However, septic complications and lysis of the bone graft with consecutive failure of the reinforcement ring remain problematic.
Authors: J A D'Antonio; W N Capello; L S Borden; W L Bargar; B F Bierbaum; W G Boettcher; M E Steinberg; S D Stulberg; J H Wedge Journal: Clin Orthop Relat Res Date: 1989-06 Impact factor: 4.176
Authors: Marc C Attinger; Pascal C Haefeli; Henrik C Bäcker; Remy Flueckiger; Peter M Ballmer; Klaus A Siebenrock; Frank M Klenke Journal: Int Orthop Date: 2019-01-20 Impact factor: 3.075
Authors: Tom Schmidt-Braekling; Dorothee Sieber; Georg Gosheger; Jan C Theil; Burkhard Moellenbeck; Dimosthenis Andreou; Ralf Dieckmann Journal: PLoS One Date: 2019-02-07 Impact factor: 3.240