Fig. 4From: Improvement of walking speed and gait symmetry in older patients after hip arthroplasty: a prospective cohort studyMean (1SD) symmetry index on three post-THA test days for female and male patients for normal and fast walking speeds. Black bars represent the reference group. TD1—15-days post-THA; TD2—21-days post-THA; TD3—27-days post-THA; THA—total hip arthroplasty. Horizontal bars represent significant differences (P <0.05)Back to article page