Postoperative pain after total knee arthroplasty.

Pain, an uncommon complication following a total knee arthroplasty, has been associated with infections, loosening, reflex sympathetic dystrophy, and occasionally litigation. Radiographic abnormalities such as the anatomic alignment, size of the prosthesis, and tilt of the prosthesis after surgery have been implicated as other sources of pain. It is shown that there is no correlation between the above abnormalities and pain.