Effects of BMI on Walking Speed and Gait Biomechanics after Anterior Cruciate Ligament Reconstruction.

摘要: Purpose History of an anterior cruciate ligament reconstruction (ACLR) and high body mass index (BMI) are strong independent risk factors for knee osteoarthritis (KOA) onset. The combination these may further negatively impact joint loading KOA risk. We sought to determine the combined influence BMI ACLR on walking speed gait biomechanics that hypothesized Methods Walking (peak vertical ground reaction force (vGRF), peak vGRF instantaneous rate vGRF-LR), flexion angle (KFA), excursion (KFE), internal extension moment (KEM), abduction (KAM)) were collected in 196 individuals with unilateral 106 uninjured controls. KFE was measured throughout stance phase, while all other analyzed during first 50% phase. 2x2 analyses variance (ANOVA) performed evaluate interaction between main effects both four cohorts (high-BMI ACLR, normal-BMI high-BMI controls, controls). Results influenced slower (F(1, 298)=7.34, p=0.007), history normal greater vGRF-LR 298)=6.56, p=0.011). When evaluating effects, demonstrated lesser (F(1,298)=7.85, p=0.005) KEM (F(1,298)=6.31, p=0.013), KAM (F(1,297)=5.83, p=0.016). Conclusion together vGRF-LR. influences KEM, KAM. need be considered when designing interventions aimed at restoring post-ACLR.