Nordic hamstring exercises in functional knee rehabilitation after anterior cruciate ligament reconstruction: a prospective, randomised, controlled study.

研究概要

Sixty male patients with unilateral ACL rupture undergoing autologous hamstring tendon reconstruction were randomized to receive either Nordic hamstring exercises with standard rehabilitation (n=30) or conventional rehabilitation alone (n=30). The primary outcome was muscle strength recovery measured by peak torque, total work, and average peak torque at 60°/s and 120°/s. Secondary outcomes included thigh circumference, Lysholm Knee Score, and knee stability tests (Lachman, anterior drawer, KT-1000). Outcomes were assessed preoperatively, and at 12 and 24 weeks postoperatively. Overall, the study showed that the Nordic hamstring group had significantly greater improvements in thigh circumference (p<0.001), hamstring strength (p<0.05 across multiple measures), and Lysholm Knee Score (97.4±3.0 vs 88.9±7.9, p=0.041). The findings suggest that Nordic hamstring exercises accelerate functional recovery, improve knee stability, and enhance hamstring strength after ACL reconstruction.