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Total ankle replacement

MEDIUM-TERM RESULTS IN 200 SCANDINAVIAN TOTAL ANKLE REPLACEMENTS

¹ Department of Orthopaedic Surgery, Wrightington Wigan and Leigh, NHS Trust, Hall Lane, Wigan, WN6 9EP, UK.
² Royal Orthopaedic Hospital, Bristol Road South, Northfield, Birmingham B31 2AP, UK.
³ Faculty of Health, University of Central Lancashire, Corporation Street, Preston, PR1 2HE, UK.

Correspondence should be sent to Mr P. L. R. Wood; e-mail: peter.wood{at}wwl.nhs.uk

We describe the medium-term results of a prospective study of 200 total ankle replacements at a single-centre using the Scandinavian Total Ankle Replacement. A total of 24 ankles (12%) have been revised, 20 by fusion and four by further replacement and 27 patients (33 ankles) have died. All the surviving patients were seen at a minimum of five years after operation. The five-year survival was 93.3% (95% confidence interval (CI) 89.8 to 96.8) and the ten-year survival 80.3% (95% CI 71.0 to 89.6).

Anterior subluxation of the talus, often seen on the lateral radiograph in osteoarthritic ankles, was corrected and, in most instances, the anatomical alignment was restored by total ankle replacement. The orientation of the tibial component, as seen on the lateral radiograph, also affects the position of the talus and if not correct can hold the talus in an abnormal anterior position. Subtalar arthritis may continue to progress after total ankle replacement. Our results are similar to those published previously.

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