Abstract
The aim of this study was to evaluate the intermediate-term survivorship of cemented fixed-bearing unicompartmental knee arthroplasty (UKA). One hundred twenty-eight consecutive UKAs in 98 patients were performed by a single surgeon with “Allegretto” UKA prostheses. Six patients died and 5 were lost to follow-up, leaving 87 patients (116 knees) with an average follow-up of 5.7 years (range, 3-8 years). At the latest follow-up, the survival rate was 92.2%; average clinical and functional knee society scores improved from 50 and 64 points preoperatively to 89 and 88 points, respectively; and average total knee score was 171 (range, 94-200). Radiographic follow-up demonstrated average alignment of 3° valgus (range, 6° varus to 7° valgus). Ninety-two percent of the patients indicated satisfaction with the procedure. Nine knees failed requiring revision at an average of 40.4 months. We are encouraged with the satisfactory results, considering the broader spectrum of selected patients.
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