Total knee arthroplasty in stiff and ankylosed knees.

A retrospective study was done to evaluate the results of total knee arthroplasty performed on 84 knees in 53 patients with spontaneously ankylosed knees, having a preoperative arc of movement between 0 degrees and 20 degrees (average, 14 degrees). The difficulties encountered in surgical exposure were managed by using various extensile exposure techniques. Follow-up ranged from 4 to 15 years (average, 9 years).