Unicompartmental knee arthroplasty

Unicompartmental knee arthroplasty (UKA) is a surgical procedure used to relieve arthritis in one of the knee compartments in which the damaged parts of the knee are replaced. UKA surgery may reduce post-operative pain and have a shorter recovery period than a total knee replacement procedure, particularly in people over 75 years of age. Moreover, UKAs may require a smaller incision, less tissue damage, and faster recovery times.

In the United States, the procedure constitutes approximately 8% of knee arthroplasties. In comparisons with a more extensive surgical procedure called high tibial osteotomy, UKA has equal or better outcomes.