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A hydroxyapatite-coated total knee replacement

PROSPECTIVE ANALYSIS OF 1000 PATIENTS

¹ 286 Pacific Highway, Crows Nest 2065, Australia.

Correspondence should be sent to Dr M. J. Cross; e-mail: mervcros{at}ozemail.com.au

We prospectively reviewed 1000 consecutive patients who underwent a cementless, hydroxyapatite-coated, stemless, total knee replacement over a period of nine years. Regular post-operative clinical follow-up was performed using the Knee Society score. The mean pre-operative score was 96, improving to 182 and 180 at five and ten years, respectively. To date, there have been seven (0.5%) cases which required revision, primarily for septic loosening (four cases), with low rates of other post-operative complications. The cumulative survival at ten years with revision as the end-point, was 99.14% (95% confidence interval 92.5 to 99.8). These results support the use of hydroxyapatite in a cementless total knee replacement since it can give reliable fixation with an excellent clinical and functional outcome.

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