Oxford medial unicompartmental knee arthroplasty in patients younger and older than 60 years of age

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A. J. Price, DPhil, FRCS(Orth), Clinical Lecturer, Honorary Consultant¹; C. A. F. Dodd, FRCS, Consultant Orthopaedic Surgeon¹; U. G. C. Svard, MD, Consultant Orthopaedic Surgeon²; and D. W. Murray, MD, FRCS(Orth), Professor of Orthopaedic Surgery¹

¹ Nuffield Department of Orthopaedic Surgery, Nuffield Orthopaedic Centre, Headington, Oxford OX3, 7LD, UK.
² Department of Orthopaedic Surgery, Skaraborgs Sjukhus, Kärnsjukhuset, 451 85, Skövde, Sweden.

We present a comparison of the results of the Oxford unicompartmental knee arthroplasty in patients younger and older than 60 years of age. The ten-year all-cause survival of the < 60 years of age group (52) was 91% (95% confidence interval (CI) 12), while in the 60 years of age group (512), the figure was 96% (95% CI 3). For the younger group, the mean Hospital for Special Surgery score at ten-year follow-up (n = 21) was 94 of 100, compared with a mean of 86 of 100 for the older group (n = 135). The results show that the Oxford unicompartmental arthroplasty can achieve ten-year results that are comparable to total knee arthroplasty in patients < 60 years of age. We conclude that for patients aged over 50, age should not be considered a contraindication for this procedure.