Total Knee Arthroplasty with Thompson's Quadricepsplasty for the Ankylosed Knee: Report of Three Cases

Abstract

We performed total knee arthroplasty with Thompson's quadricepsplasty on three anlylosed knees. Medial parapatellar incision was used for arthrolysis, and vastus lateralis and medialis were isolated from rectus femoris. The joint capsule is divided on either side of the patella, and intraarticular adhesions were released. The vastus intermedius was released. At the end of the procedure, the retinacular release was left open. Despite reduced knee flexions (cases 1 and 2) of the involved knee during the stance phase, the postoperative range of motion achieved -5-115° (case 1) and 0-75° (case 2). Knee function scores also improved from 30 to 90 points (case 1) and 30 to 85 points (case 2), respectively. One case (case 3) of femoral chondylar fracture was operated with LCP (locking compression plate), postoperative range of motion was 0-40°, and extension lag remained. However, RA knee function scores improved from 20 to 57 points. Both cases can now walk freely with no pain.