Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning
Knee moments during run-to-cut maneuvers are associated with lateral trunk positioning
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DOI：
10.1016/j.jbiomech.2012.05.031
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发表时间：
2012-07-26
影响因子：
2.4
通讯作者：
Chaudhari, Ajit M. W.
中科院分区：
文献类型：
--
作者：
Jamison, Steve T.;Pan, Xueliang;Chaudhari, Ajit M. W.
非接触性前交叉韧带（ACL）损伤约占ACL断裂的70%，通常发生在方向或枢轴突然改变期间。在受控扰动任务中，躯干神经肌肉控制力下降与ACL损伤发生率相关，而膝关节外展力矩和胫骨内旋力矩与ACL应变和ACL损伤发生率相关。在这项研究中，躯干的运动在运行到切动作和负载的膝关节在同一活动期间之间的关联进行了调查。外部膝关节力矩和躯干角度进行了量化，在运行到切割机动29人。检查的躯干角度为外侧倾斜（躯干与垂直方向的额状面角度）、地面反作用力（GRF）与包含GRF和肩部的平面中的躯干之间的角度（torso-GRF_shoulder）;以及GRF与包含GRF和骨盆的平面中的躯干之间的角度（torso-GRF_pelvic）。躯干角度与峰值膝关节外展力矩之间存在显著正相关（外侧倾斜，p=0.002;躯干-GRF_shoulder，p=0.036），而峰值胫骨内旋力矩与外侧倾斜之间存在显著负相关（p=0.021）。由于这些力矩的峰值出现在不同时间，并且在峰值膝关节外展力矩（-0.29 +/- 0.46%BW*ht）时观察到最小轴向旋转力矩，因此峰值膝关节外展力矩与躯干倾斜之间的正相关性表明，增加躯干倾斜可能会增加ACL负荷和受伤风险。(c)2012爱思唯尔有限公司保留所有权利。
Non-contact anterior cruciate ligament (ACL) injuries account for approximately 70% of ACL ruptures and often occur during a sudden change in direction or pivot. Decreased neuromuscular control of the trunk in a controlled perturbation task has previously been associated with ACL injury incidence, while knee abduction moments and tibial internal rotation moments have been associated with ACL strain and ACL injury incidence. In this study, the association between movement of the trunk during a run-to-cut maneuver and loading of the knee during the same activity was investigated. External knee moments and trunk angles were quantified during a run-to-cut maneuver for 29 individuals. The trunk angles examined were outside tilt (frontal plane angle of the torso from vertical), angle between the ground reaction force (GRF) and the torso in the plane containing the GRF and shoulders (torso-GRF_shoulders); and angle between GRF and torso in the plane containing the GRF and pelvis (torso-GRF_pelvis). Significant positive associations were found between torso angles and peak knee abduction moments (outside tilt, p=0.002; and torso-GRF_shoulders, p=0.036) while a significant negative association was found between peak tibial internal rotation moment and outside tilt (p=0.021). Because the peaks of these moments occur at different times and minimal axial rotation moment is observed at peak knee abduction moment (-0.29 +/- 0.46%BW*ht), the positive association between peak knee abduction moment and torso lean suggests that increasing torso lean may increase ACL load and risk of injury. (c) 2012 Elsevier Ltd. All rights reserved.