10-year results of ReCap hip resurfacing arthroplasty: a non-designer case series

Abstract

Introduction: We present the 10-year results of the ReCap Magnum HRA system in a consecutive single surgeon's series from a non-designer centre. Patients and methods: Hip resurfacing arthroplasty (HRA) was performed in active males under 65 years and in premenopausal females with adequate bone density proven by a DEXA scan. Clinical follow-up; annual Oxford hip scoring, UCLA scoring and whole blood metal ion level measurement. Kaplan-Meier method was used to determine survivorship with revision as the end point. Radiographs were analysed for; acetabular inclination, notching, neck thinning and change in implant position. 72 HRAs were performed in 66 patients with a mean age of 45.7 years. The mean follow-up was 10.63 ± 0.54 years (range 10-11.75 years). Results: The survivorship of the cohort at minimum 10 years was 97.22% (95% confidence interval 94.14-99.01). There was a significant improvement in the Oxford Hip Score from 15.77 ± 4.33 to 45.67 ± 4.43 (p < 0.001) and the UCLA score from 3.14 ± 0.74 to 7.07 ± 1.16 (p < 0.001). Mean whole blood cobalt and chromium levels were 28.83 ± 8.42 nmol/l and 39.93 ± 9.64 nmol/l respectively. There were 2 revisions, due to avascular necrosis and implant failure. In our series the implant has performed well with <1% failure per year. We did not note any difference between the genders, since all the females in our series had been screened for osteopenia using a DEXA scan. All our patients returned to an active lifestyle which was maintained at final follow-up. Conclusion: Strict selection criteria and a well-designed implant result in good long-term functional and radiological results with hip resurfacing.

Limited need for screening of metal-on-metal hip resurfacing patients beyond 10 years of follow-up

“…Our 85.9% implant survival after 14.5 years follow-up corresponds with the reported HRA implant survival rates from register studies, 21,22 but is much poorer than the 10-year result implant survival of 97.22% presented by Kiran et al 23 who also used the ReCap Hip Resurfacing design. This difference can be partially explained by the more extensive MoM disease screening used in our study.…”

“…34,35 Other types of hip resurfacing, including the ReCap hip resurfacing system used in our study, have been studied to a much lesser degree, with only a few studies reporting >10 years of follow-up. 15,23 In a registry-based study the 8-year survival with revision for any reason as an endpoint was 93% (CI, 92-94) for BHR, 86% (CI, 78-94) for Corin, 91% (CI, 89-94) for ReCap, 92% (CI, 89-96) for Durom and 72% (CI, 69-76) for ASR. The 10-year survival for all HRAs was 86% (CI, 84-87%) as compared to 92% (CI, 91-92) for reference THAs.…”

Amount and type of physical activity and sports from one year forward after hip or knee arthroplasty—A systematic review

“…One-item questionnaires giving a general indication of PA were used in twelve articles [ 4 , 25 , 40 , 42 , 45 , 64 , 72 , 74 , 76 , 86 , 109 , 139 ]. Eleven used the UCLA score.…”