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Open Access Research article

Hip resurfacing in a district general hospital: 6-year clinical results using the ReCap hip resurfacing system

Walter van der Weegen1*, Henk J Hoekstra1, Thea Sijbesma1, Shennah Austen1 and Rudolf W Poolman2

Author Affiliations

1 Department of Orthopaedic Surgery, St. Anna Hospital, Bogardeind 2, Geldrop, EH, 5664, Netherlands

2 Department of Orthopaedic Surgery, Onze Lieve Vrouwe Gasthuis, Amsterdam, The Netherlands

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BMC Musculoskeletal Disorders 2012, 13:247  doi:10.1186/1471-2474-13-247

Published: 13 December 2012

Abstract

Background

The purpose of our study was to prospectively report the clinical results of 280 consecutive hips (240 patients) who received a ReCap Hip Resurfacing System implant (Biomet Inc., Warsaw, USA) in a single district general hospital. Literature reports a large variation in clinical results between different resurfacing designs and published results using this particular design are scarce.

Methods

Mean follow up was 3.3 years (1.0 to 6.3) and four patients were lost to follow-up. All patients were diagnosed with end-stage hip osteoarthritis, their mean age was 54 years and 76.4% of all patients were male.

Results

There were 16 revisions and four patients reported a Harris Hip Score <70 points at their latest follow up. There were no pending revisions. Kaplan-Meier implant survival probability, with revision for any reason as endpoint, was 93.5% at six years follow-up (95%-CI: 88.8-95.3). There were no revisions for Adverse Reactions to Metal Debris (ARMD) and no indications of ARMD in symptomatic non-revised patients, although diagnostics were limited to ultrasound scans.

Conclusions

This independent series confirms that hip resurfacing is a demanding procedure, and that implant survival of the ReCap hip resurfacing system is on a critical level in our series. In non-revised patients, reported outcomes are generally excellent.

Trial registration

ClinicalTrials.gov Identifier: NCT00603395

Keywords:
Hip resurfacing; Implant survival; Adverse reaction to metal debris; ReCap design