Abstract
The indications for unicompartmental knee arthroplasty (UKA) are widely debated despite a growing body of literature. The current study investigates the minimum 2-year outcomes of Oxford phase III mobile-bearing UKA using a liberal set of indications for the procedure. Two hundred fifty-seven consecutive UKAs in 219 patients with potential for 2 years follow-up were followed. There have been 10 failures for a survivorship of 96.1% at 45 months. Patient factors such as weight, age, pre-existing patellofemoral disease, and anterior knee pain were not related to early failure. Clinical scores were better in the older, lighter-weight patients with isolated medial knee pain. After more than 900 consecutive Oxford UKAs over 4 years, the cumulative survivorship is greater than 98% despite ignoring age, weight, location of preoperative pain, and radiographic signs of patellofemoral disease. The Oxford phase III minimally invasive UKA is truly mobile magic.
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