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Excellent long-term results of the Müller acetabular reinforcement ring in primary cup revision.
Mueller Greber, Pascal; Manzoni, Isabella; Ochsner, Peter E; Ilchmann, Thomas; Zwicky, Lukas; Clauss, Martin.
Afiliación
  • Mueller Greber P; a Department of Orthopedics and Trauma Surgery , Kantonsspital Baselland , Liestal , Switzerland.
  • Manzoni I; a Department of Orthopedics and Trauma Surgery , Kantonsspital Baselland , Liestal , Switzerland.
  • Ochsner PE; a Department of Orthopedics and Trauma Surgery , Kantonsspital Baselland , Liestal , Switzerland.
  • Ilchmann T; b Department of Orthopedics , Hirslanden Klinik Birshof , Münchenstein , Switzerland.
  • Zwicky L; a Department of Orthopedics and Trauma Surgery , Kantonsspital Baselland , Liestal , Switzerland.
  • Clauss M; a Department of Orthopedics and Trauma Surgery , Kantonsspital Baselland , Liestal , Switzerland.
Acta Orthop ; 88(6): 619-626, 2017 Dec.
Article en En | MEDLINE | ID: mdl-28771057
Background and purpose - The original Müller acetabular reinforcement ring (ARR) was developed to be used for acetabular revisions with small cavitary and/or segmental defects or poor acetabular bone quality. Long-term data for this device are scarce. We therefore investigated long-term survival and radiographic outcome for revision total hip arthroplasty using the ARR. Patients and methods - Between October 1984 and December 2005, 259 primary acetabular revisions using an ARR were performed in 245 patients (259 hips). The mean follow-up time was 10 (0-27) years; 8 hips were lost to follow-up. The cumulative incidence for revision was calculated using a competing risk model. Radiographic assessment was performed for 90 hips with minimum 10 years' follow-up. It included evaluation of osteolysis, migration and loosening. Results - 16 ARRs were re-revised: 8 for aseptic loosening, 6 for infection, 1 for suspected infection, and 1 due to malpositioning of the cup. The cumulative re-revision rate for aseptic loosening of the ARR at 20 years was 3.7% (95% CI 1.7-6.8%). Assuming all patients lost to follow-up were revised for aseptic loosening, the re-revision rate at 20 years was 6.9% (95% CI 4.1-11%). The overall re-revision rate of the ARR for any reason at 20 years was 7.0% (95% CI 4.1-11%). 21 (23%) of the 90 radiographically examined ARR had radiographic changes: 12 showed isolated signs of osteolysis but were not loose; 9 were determined loose on follow-up, of which 5 were revised. Interpretation - Our data suggest that the long-term survival and radiographic results of the ARR in primary acetabular revision are excellent.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Complicaciones Posoperatorias / Artroplastia de Reemplazo de Cadera / Predicción / Prótesis de Cadera / Acetábulo Tipo de estudio: Diagnostic_studies / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Aged / Aged80 / Humans / Middle aged Idioma: En Revista: Acta Orthop Asunto de la revista: ORTOPEDIA Año: 2017 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Suecia
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Complicaciones Posoperatorias / Artroplastia de Reemplazo de Cadera / Predicción / Prótesis de Cadera / Acetábulo Tipo de estudio: Diagnostic_studies / Incidence_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Adult / Aged / Aged80 / Humans / Middle aged Idioma: En Revista: Acta Orthop Asunto de la revista: ORTOPEDIA Año: 2017 Tipo del documento: Article País de afiliación: Suiza Pais de publicación: Suecia