163. MINIMALLY-INVASIVE TOTAL KNEE ARTHROPLASTY: POTENTIAL COMPLICATIONS BASED ON A LARGE SINGLE-SURGEON COHORT REVIEW

Purpose: Minimally-invasive total knee arthroplasty has generated tremendous recent interest, but there have been reports of complications resulting from these new techniques. However, most studies have less than one year follow-up and are anecdotal in their results. The purpose of this study was to retrospectively evaluate a series of 1,000 consecutive minimally invasive total knee arthroplasties, to describe the clinical and radiographic complications of this technique, to determine whether complication rates changed with experience, and finally to compare complication rates to a match group operated by the same surgeon.Method: Clinical and radiographic data were reviewed for the first 1,000 consecutive minimally-invasive knees (820 patients) performed by a single surgeon with a minimum 2 year post-operative period. All patients were operated using the mid-vastus approach, with a mean incision length of 10 cm (range, 8 to 13 cm). Nine patients were lost prior to 2 year follow-up, leaving 990 knees (811 ...