Optimizing whole-body kinematics to minimize valgus knee loading during sidestepping: Implications for ACL injury risk
Optimizing whole-body kinematics to minimize valgus knee loading during sidestepping: Implications for ACL injury risk
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DOI：
10.1016/j.jbiomech.2012.02.010
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发表时间：
2012-05-11
影响因子：
2.4
通讯作者：
Reinbolt, J. A.
中科院分区：
文献类型：
--
作者：
Donnelly, C. J.;Lloyd, D. G.;Reinbolt, J. A.
在非接触式侧步过程中与外部施加的膝外翻力矩升高以及随后的前十字韧带 (ACL) 损伤风险相关的运动学机制尚不清楚。为了解决这个问题，OpenSim 中的残差缩减算法 (RRA) 用于创建九个特定于主题的全身（37 自由度）扭矩驱动模拟，模拟男性运动员执行计划外侧步 (UnSS) 运动任务。 RRA 再次被用来产生优化的运动学解决方案，在站立的重量接受阶段减少峰值外翻膝盖扭矩。经过运动学优化前后，平均峰值外翻膝力矩显着降低了 44.2 Nm (p=0.045)。在 RRA 期间，始终使用所有三个运动平面上可能的 37 种上半身和下半身运动学变化中的 9 种来减少膝外翻峰值力矩。所有九个模拟所使用的广义运动学策略是在 UnSS 期间减少膝外翻峰值力矩和随后的 ACL 损伤风险，将全身质心向内侧重定向，朝向所需的行进方向。 (C) 2012 Elsevier Ltd. 保留所有权利。
The kinematic mechanisms associated with elevated externally applied valgus knee moments during non-contact sidestepping and subsequent anterior cruciate ligament (ACL) injury risk are not well understood. To address this issue, the residual reduction algorithm (RRA) in OpenSim was used to create nine subject-specific, full-body (37 degrees of freedom) torque-driven simulations of athletic males performing unplanned sidestep (UnSS) sport tasks. The RRA was used again to produce an optimized kinematic solution with reduced peak valgus knee torques during the weight acceptance phase of stance. Pre-to-post kinematic optimization, mean peak valgus knee moments were significantly reduced by 44.2 Nm (p=0.045). Nine of a possible 37 upper and lower body kinematic changes in all three planes of motion were consistently used during the RRA to decrease peak valgus knee moments. The generalized kinematic strategy used by all nine simulations to reduce peak valgus knee moments and subsequent ACL injury risk during UnSS was to redirect the whole-body center of mass medially, towards the desired direction of travel. (C) 2012 Elsevier Ltd. All rights reserved.