Forty-eight patients treated by primary bilateral simultaneous total knee arthroplasty, in which one knee had a lateral release and the other did not, were evaluated clinically and roentgenographically from one to 12 years postoperatively. Thirty of these patients also had a technetium-99 bone scan. Mean clinical scores at the last follow-up examination were 90 for both groups. Roentgenographically, there were no subluxations, dislocations, or fractures in either group. There were two metal-backed patellae (one in each group) with signs of polyethylene wear and developed debris. Bone scans showed no difference between the two groups and no signs of osteonecrosis of the patella.
Center for Hip and Knee Surgery. Mooresville, Indiana, and Louisiana State University, Shreveport, Louisiana.
Reprint requests to Merrill A. Ritter, M.D., Center for Hip and Knee Surgery, I199 Hadley Rd., Mooresville, IN 46158.
Presented at the Fourth Open Scientific Meeting of The Knee Society. Las Vegas, Nevada. February 12, 1989.
Received: April 12, 1989