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Abstract
The postoperative results of total ankle arthroplasty (TAA) were surveyed, and the indications of TAA for rheumatoid arthritis (RA) were examined. We have performed TAA in properly selected patients with indication of ankle joint destruction due to RA. The subjects were 18 RA patients (20 joints) who underwent TAA between April 1988 and April 1996. Type-ND or type-TNK Bioceram was used without cement for possible revision of TAA. No destruction of large joints was found in 8 patients, and TAA was used as part of multiple arthroplasty in 10 patients. After the operation, decrease in or disappearance of joint pain was obtained, and range of motion and improved ability to walk were secured. The clinical results were superior to those obtained for 17 joints of 17 patients who underwent ankle arthrodesis during the same period. However, a radiolucent zone was observed an X-ray examination in every case, after 8 years on average (range 5–12 years) after operation. Under present conditions, ankle arthrodesis should be used for younger patients. When no destruction of the hip or knee joint is found and the patient is 65 years of age or older, we believe TAA is indicated. In cases of multiple arthroplasty or with bilateral ankle joint destruction, TAA appears to be useful if patients are young, considering their better life expectancy and quality of life.