Fig. 1. (A) VAS for each group at 24 hours postoperatively. The VAS scores were not significantly different among the three groups. (B) Additional analgesic treatment was given to each of the three groups for two days after surgery. Values are presented as mean ± standard deviation. VAS: visual analog scale, Epi: epidural analgesia, PCA: patient-controlled analgesia, CFNB: continuous femoral nerve block. *p < 0.05.
