480 patients scheduled for bilateral total knee arthroplasty were randomized to a high-flexion device in one knee and a standard device in the other knee. Patients were assessed after a minimum of 10 years for incidence of aseptic loosening, clinical scores, and range of motion. One case of femoral aseptic loosening was observed in each group. Clinical scores and range of motion were similar between groups at final follow-up.
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