The percentages of ipsilateral knee pain (IKP) and contralateral knee pain (CKP) preoperatively and at 3 months and 1 year postoperatively are shown. Preoperatively, 141 of 255 patients (55%) had IKP, which occurred more frequently than CKP (45 of 255; 18%). At 3 months postoperatively, 48 of 197 patients (24%) had IKP, which was similar to the rate of CKP (40 of 197; 20%). At 1 year, 50 of 227 patients (22%) had IKP, which also was similar to the rate for CKP (48 of 227; 21%). Black = reported pain; gray = no pain.