Comparison of survival and cost‐effectiveness between unicondylar arthroplasty and total knee arthroplasty in patients with primary osteoarthritis: A follow‐up study of 50,493 knee replacements from the Finnish Arthroplasty Register

Abstract

At a nationwide level, UKA had significantly poorer long-term survival than TKA. What is more, UKA did not even have a theoretical cost benefit over TKA in our study. Based on these results, we cannot recommend widespread use of UKA in treatment of unicompartmental OA of the knee.