Related Experiment Video
Updated: Sep 20, 2025
Potentiodynamic Corrosion Testing
Published on: September 4, 2016
11-Year outcomes in patients with metal-on-metal ASR hip arthroplasty
Christian Bitar1,2, Ivan Moberg3, Ferid Krupic4
1Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden.
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.
More Related Videos
09:51The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
Published on: September 7, 2022
09:08Biotribological Testing and Analysis of Articular Cartilage Sliding against Metal for Implants
Published on: May 14, 2020