Ishida Tomoya, Yamanaka Masanori, Takeda Naoki, Homan Kentaro, Koshino Yuta, Kobayashi Takumi, Matsumoto Hisashi, Aoki Yoshimitsu
Graduate School of Health Sciences, Hokkaido University, Sapporo, Hokkaido, Japan.
Knee Surg Sports Traumatol Arthrosc. 2015 Apr;23(4):1004-9. doi: 10.1007/s00167-013-2815-2. Epub 2013 Dec 10.
The purpose of this study was to examine the effect of changing toe direction on knee kinetics and kinematics associated with anterior cruciate ligament injury during drop vertical jumps.
Fourteen females performed drop vertical jumps under three toe conditions (natural, toe-in, and toe-out). The knee kinetics and kinematics during landing were evaluated using a motion analysis system. Results under three toe conditions were compared using a one-way repeated measures analysis of variance and a post hoc Bonferroni test.
Toe-in landing was associated with a significantly greater knee abduction angle, tibial internal rotation angle, and knee abduction moment than the natural and toe-out conditions. Toe-out landing was associated with significantly greater tibial internal rotational angular velocity.
Changing toe direction significantly affects knee kinetics and kinematics during landing. It is important to avoid changing toe direction excessively inward or outward during landing to prevent the increases in knee abduction and tibial internal rotation which might increase the risk of ACL injury.
Prognosis, Level IV.
本研究旨在探讨在垂直下落跳过程中，改变脚趾方向对与前交叉韧带损伤相关的膝关节动力学和运动学的影响。
14名女性在三种脚趾条件下（自然、内扣、外展）进行垂直下落跳。使用运动分析系统评估着地过程中的膝关节动力学和运动学。使用单向重复测量方差分析和事后Bonferroni检验比较三种脚趾条件下的结果。
与自然和外展条件相比，内扣着地时膝关节外展角度、胫骨内旋角度和膝关节外展力矩显著更大。外展着地时胫骨内旋角速度显著更大。
改变脚趾方向会显著影响着地过程中的膝关节动力学和运动学。着地时避免过度向内或向外改变脚趾方向很重要，以防止膝关节外展和胫骨内旋增加，这可能会增加前交叉韧带损伤的风险。
预后，IV级。
