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Pain and function were assessed using the American Orthopaedic Foot and Ankle Society (AOFAS) score and regular standardised anteroposterior and lateral weight-bearing radiographs were obtained. Patient satisfaction and complications were recorded and the survival of the implants was demonstrated by the Kaplan-Meier method. <\/jats:p><jats:p> The mean follow-up was for 57.8 months (48 to 80). The cumulative survival rate at six years was 94.7% (95% confidence interval 80.3 to 98.7). The mean total AOFAS score was 88.1 (53 to 100). The mean score for pain was 35.8 (20 to 40). Ten patients presented with edge-loading of whom nine had corrective surgery. Two ankles were revised, one to an arthrodesis and the other to replace the tibial component. Nine patients showed radiological evidence of osteolysis. They had minimal non-progressive symptoms and further surgery was not undertaken. Nevertheless, the concerns about osteolysis led to the implant being withdrawn by the manufacturer. <\/jats:p><jats:p> The medium-term results of the ankle evolution system ankle replacement are satisfactory with high patient satisfaction, but the rate of osteolysis is of some concern. The long-term benefit of this procedure has yet to be determined. <\/jats:p>","DOI":"10.1302\/0301-620x.92b1.22360","type":"journal-article","created":{"date-parts":[[2010,1,1]],"date-time":"2010-01-01T00:22:43Z","timestamp":1262305363000},"page":"61-65","source":"Crossref","is-referenced-by-count":42,"title":["Total ankle replacement by the Ankle Evolution System"],"prefix":"10.1302","volume":"92-B","author":[{"given":"S. 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