11-Year outcomes in patients with metal-on-metal ASR hip arthroplasty.
retrospective_cohort · Level III
Where this comes from
- Record sourced from PubMed, PMID 35663448.
- Also identified by DOI 10.1016/j.jor.2022.05.015 and PMC identifier 9160402.
- Licence recorded as CC BY-NC-ND.
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Abstract
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. 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. 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. The levels of Co ions in blood were higher in the patients who had undergone XL THA and increased significantly over time.
Anatomy
- hip