Total knee arthroplasty in an adult with congenital dislocation of the patella

This article reports the use of total knee arthroplasty with release of the lateral retinaculum, proximal extensor mechanism realignment, and patellar resurfacing as a valid treatment option for adult patients with congenital dislocation of the patella who have absence of the femoral sulcus and asso ciated osteoarthritis. The patient presented in this case report had improv ement of his Knee Society knee score and function score from preoperative l evels of 8 and 45 to 77 and 80 postoperatively.