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Hip movement (°) during flexion (A) and extension (B) quartiles before and after surgery. Increased hip ROM was observed after surgery for the following quartile (Q): extension Q1 (p = 0.03, ηp2 = 0.34), extension Q2 (p = 0.03, ηp2 = 0.35), extension Q3 (p = 0.04, ηp2 = 0.29) and flexion Q3 (p = 0.04, ηp2 = 0.30). * Treatment effect ρ < 0.05, and ‡ interaction effect ρ < 0.05.
