This study compares the incidence of post-operative complications (within 90 days) following primary total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA). 2,919 Consecutive patients were retrospectively reviewed over 5 years at three institutions; 2,290 underwent primary TKA and 629 underwent UKA. Simultaneous bilateral procedures and diagnoses other than osteoarthritis were excluded. Regression analysis was performed to isolate the effects of TKA versus UKA on the rate of post-operative complications.Introduction
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