Management of the Stiff Total Knee Arthroplasty with Revision to a Total Condylar Bearing Rotating Platform Prosthesis

Total knee arthroplasty (TKA) is performed to relieve pain and restore function in patients with arthritic knees. There are approximately 700,000 knee replacements performed each year, and this number is projected to reach 3.5 million per year by 2030 [1]. Although knee replacements offer significant improvements in quality of life, they are not without complications. Stiffness is a known complication that occurs in 1.3-12% [2-4] of primary total knee arthroplasties. Stiffness is defined as having a flexion contracture of 10-15 degrees or a total arc of motion that is less than 90 degrees [5,6].