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

Walter van der Weegen, Henk J Hoekstra, Thea Sijbesma, Shennah Austen, Rudolf W Poolman, Walter van der Weegen, Henk J Hoekstra, Thea Sijbesma, Shennah Austen, Rudolf W Poolman

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.

Figures

Figure 1
Figure 1
ReCap resurfacing device.
Figure 2
Figure 2
A: Acetabular radiolucency zones according to DeLee and Charnley [[14]].B: Femoral radiolucency zones according to Beaulé [13] .
Figure 3
Figure 3
ReCap Kaplan-Meier implant survival probability
Figure 4
Figure 4
A: Non-displaced partial femoral neck fracture.B: Healed femoral neck fracture.

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Source: PubMed

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