Hydroxyapatite-Coated Femoral Implant in Metal-on-Metal Resurfacing Hip Arthroplasty: Minimum of Two Years Follow-Up

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Clinical results

The mean duration of follow-up was 28.5 months (range, 24.0–37.8 months). One acetabular component was revised because of aseptic loosening, and in one case both components were revised because of infection. Kaplan-Meier analysis demonstrated that the overall survival rate of the prosthesis was 97.1% (standard of error [SE], 0.02) and the mean survival time was 37.0 months (95% confidence interval [CI], 35.9–38.1), whereas the survival rate of the femoral component alone was 98.6% (SE, 0.014)

Summary

The authors' preliminary results with a hydroxyapatite-coated femoral implant in metal-on-metal hip resurfacing have been promising with excellent survival rates and clinical outcomes. Longer follow-up studies are needed, particularly to interpret the clinical significance of neck thinning.

Acknowledgments

The authors wish to thank Clare Reinhardt, BSc, for her valuable contribution in the data provision for this study.

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    Dr. A. Lilikakis has received a research grant from Corin, Cirencester, United Kingdom, in support of this study.

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