The effect of patient age and diagnosis on the 5-year outcomes of mobile-bearing total ankle replacement

At 5 years, the post-traumatic arthritis group had a significantly higher composite score than the osteoarthritis (p < 0.0001) or rheumatoid arthritis groups (p < 0.0001). Only the post-traumatic arthritis group experienced a significant increase in composite SF-36 score from baseline (p < 0.0001). There was a significant improvement from pre-operatively to 5 years in all three domains of the FAOS and in total scores in both groups (over 60 p < 0.0001; 60 and under p = 0.0002). There was a significant improvement in composite SF-36 score from pre-operative to 5 years in the patients 60 years or younger at the time of surgery (p = 0.0006), but not for the patients over 60. Three patients have been revised (4%), at a mean of 4.8 years following surgery with one patient awaiting revision.