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. 2011 Oct 14;470(2):578–583. doi: 10.1007/s11999-011-2116-3

Fig. 1.

Fig. 1

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.