We performed 52 cemented ankle arthroplasties for painful osteoarthritis (OA) (25) or rheumatoid arthritis (RA) (27) using an ankle prosthesis with a near-anatomical design. We assessed the patients radiologically and clinically for up to 14 years using an ankle scoring system. The preoperative median scores were 29 for the OA group and 25 for the RA group and at ten years were 93.5 and 83, respectively. Six ankles in the OA group and five in the RA group required revision or arthrodesis. Survivorship analysis of the two groups showed no significant differences with 72.7% survival for the OA group and 75.5% for the RA group at 14 years.
One hundred consecutive cases treated with ankle arthroplasty for osteoarthritis (OA) or rheumatoid arthritis were followed prospectively and annually for up to 15 years. Survivorship analysis was performed, with the endpoint being prosthesis revision or change to arthrodesis. Patients who were younger than 50 years at the first implantation constituted one group (group A, 30 ankles). The other group (group B, 70 ankles) consisted of patients aged 50 years or older at the first implantation. All patients were assessed clinically according to the Kofoed Ankle Score. The distribution of OA/rheumatoid arthritis in group A was 18/12, and in group B it was 43/27 (not significant). The median age in group A was 46 years (range, 22-49 years), and in group B it was 63 years (range, 51-83 years). In group A, one case was revised, and three cases were converted to arthrodesis after a median of 5 years (range, 5-9 years). In group B, four cases were revised, and four cases were converted to arthrodesis after a median of 5.5 years (range, 2-8 years). The results of cases with traumatic OA did not differ between groups A and B. It was concluded that the results of ankle arthroplasty were of equal quality in patients younger than 50 years and those who were older.
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