女性进行下蹲落地时膝关节剪切力和伸肌力矩与膝关节平移的关系：一项双平面荧光透视研究
Relationship of knee shear force and extensor moment on knee translations in females performing drop landings: a biplane fluoroscopy study.
作者信息
Torry Michael R, Myers Casey, Shelburne Kevin B, Peterson Daniel, Giphart J Erik, Pennington W Wesley, Krong Jacob P, Woo Savio L-Y, Steadman J Richard
机构信息
School of Kinesiology and Recreation, Illinois State University, Normal, IL 61761-0512, USA.
出版信息
Clin Biomech (Bristol). 2011 Dec;26(10):1019-24. doi: 10.1016/j.clinbiomech.2011.06.010. Epub 2011 Aug 5.
BACKGROUND
Research has linked knee extensor moment and knee shear force to the non-contact anterior cruciate ligament injury during the landing motion. However, how these biomechanical performance factors relate to knee translations in vivo is not known as knee translations cannot be obtained with traditional motion capture techniques. The purpose of this study was to combine traditional motion capture with high-speed, biplane fluoroscopy imaging to determine relationships between knee extensor moment and knee shear force profiles with anterior and lateral tibial translations occurring during drop landing in female athletes.
METHODS
15 females performed drop landings from a height of 40 cm while being recorded using a high speed, biplane fluoroscopy system and simultaneously being recorded using surface marker motion capture techniques to estimate knee joint angle, reaction force and moment profiles.
FINDINGS
No significant statistical relationships were observed between peak anterior or posterior knee shear force and peak anterior and lateral tibial translations; or, between peak knee extensor moment and peak anterior and lateral tibial translations. Although differences were noted in peak shear force (P=0.02) and peak knee extensor moment (P<0.001) after stratification into low and high shear force and moment cohorts, no differences were noted in anterior and lateral tibial translations (all P ≥ 0.18).
INTERPRETATION
Females exhibiting high knee extensor moment and knee shear force during drop landings do not yield correspondingly high anterior and lateral tibial translations.
背景
研究已将伸膝力矩和膝关节剪切力与着陆动作期间的非接触性前交叉韧带损伤联系起来。然而，由于传统运动捕捉技术无法获取膝关节平移数据，这些生物力学性能因素在体内与膝关节平移之间的关系尚不清楚。本研究的目的是将传统运动捕捉与高速双平面荧光透视成像相结合，以确定女性运动员在下落着地过程中伸膝力矩和膝关节剪切力曲线与胫骨向前和向外平移之间的关系。
方法
15名女性从40厘米高度进行下落着地动作，同时使用高速双平面荧光透视系统进行记录，并使用表面标记运动捕捉技术同步记录，以估计膝关节角度、反作用力和力矩曲线。
结果
未观察到膝关节前后剪切力峰值与胫骨前后和向外平移峰值之间；或伸膝力矩峰值与胫骨前后和向外平移峰值之间存在显著的统计关系。尽管在按低剪切力和力矩组与高剪切力和力矩组分层后，剪切力峰值（P = 0.02）和伸膝力矩峰值（P < 0.001）存在差异，但胫骨前后和向外平移未见差异（所有P≥0.18）。
解读
在下落着地过程中表现出高伸膝力矩和膝关节剪切力的女性，其胫骨向前和向外平移并未相应增加。
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