11-Year outcomes in patients with metal-on-metal ASR hip arthroplasty

BACKGROUND: We analysed the long-term revision rate, clinical outcomes and metal ion concentrations in blood over time in patients who had undergone metal-on-metal Articular Surface Replacement (ASR) hip arthroplasty. METHODS: A total of 38 patients (43 hips) were included: 24 patients (28 hips) und...

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Detalles Bibliográficos
Autores principales: Bitar, Christian, Moberg, Ivan, Krupic, Ferid, Wretenberg, Per, Otten, Volker, Crnalic, Sead
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9160402/
https://www.ncbi.nlm.nih.gov/pubmed/35663448
http://dx.doi.org/10.1016/j.jor.2022.05.015
Descripción
Sumario:BACKGROUND: We analysed the long-term revision rate, clinical outcomes and metal ion concentrations in blood over time in patients who had undergone metal-on-metal Articular Surface Replacement (ASR) hip arthroplasty. METHODS: A total of 38 patients (43 hips) were included: 24 patients (28 hips) underwent large-head total hip arthroplasty (XL THA), and 14 patients (15 hips) underwent hip resurfacing arthroplasty (HRA). The median follow-up time was 11 (range 7-12) years. RESULTS: None of 15 HRA implants were revised. Nine of 28 XL THA implants (32%) in 8 patients were revised. The Co ion levels significantly increased in the XL THA group (p=0.009) over a median time period of 84 (25-97) months. CONCLUSION: The levels of Co ions in blood were higher in the patients who had undergone XL THA and increased significantly over time.

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