Total ankle replacement is an established alternative to ankle fusion in selected patients. One of the possible exclusions used is the presence of a high BMI. This is based on our experience with hip and knee replacements where poor outcomes have been associated with obesity, however little work has been done on this subject in the ankle. We report the first series solely focussing on the impact of BMI on TAR. Forty five consecutive patients were identified and followed up using the SF-36 and VAS-FA. All patients had their BMI collected prospectively and BMI at latest follow-up was calculated. There was an average 5-year follow-up with just 9 (20%) lost to follow-up. At final follow-up 8 (17.7%) patients were deceased, none of the deaths were attributable to their previous ankle surgery. We did not find an association between high BMI and reduced outcomes or need for secondary surgery. In addition there was no significant change in BMI after surgery.

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