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首页> 外文会议>International Symposium on Biomechanics in Sports vol.2; 20050822-27; Beijing(CN) >KINEMATICS AND MYOELECTRIC ANALYSIS OF ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTED KNEE IN DROP LANDING - A PILOT STUDY
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KINEMATICS AND MYOELECTRIC ANALYSIS OF ANTERIOR CRUCIATE LIGAMENT RECONSTRUCTED KNEE IN DROP LANDING - A PILOT STUDY

机译：降落前交叉韧带重建膝关节的运动学和电动分析-一项初步研究。

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摘要

This study aimed to investigate the lower extremity kinematics and electromyography (EMG) of anterior cruciate ligament (ACL) reconstructed knee during single-leg drop landing. One female elite basketball athlete rehabilitated from ACL reconstruction surgery 33 months prior this study performed five trials of single-leg drop landing from a 300mm-high platform with the arms crossed over the chest. The motion in sagittal plane was videotaped and was analyzed by a motion analysis system. Foot strike was recognized by a force plate. Synchronized EMG signals from four thigh muscles (vastus medialis, vastus lateralis, medial hamstring, and lateral hamstring) of the landing leg were collected and amplified by an EMG system. The EMG data were trimmed, normalized and filtered. Root mean square (RMS) values of the processed signals were compared. Results showed that thigh muscle activities of ACL-reconstructed leg were lower. Hip joint was more extended before foot strike. Prolonged hip and knee flexion occurred after foot strike, which delayed the recovery of anatomical position.
机译：这项研究的目的是研究单腿下降着陆时前交叉韧带（ACL）重建的膝盖的下肢运动学和肌电图（EMG）。这项研究之前的33个月，一名女性精英篮球运动员从ACL重建手术中康复，进行了五次单腿落地试验，试验是从300毫米高的平台上将单腿放下，双臂交叉在胸部上。对矢状面的运动进行录像，并通过运动分析系统进行分析。脚踏板被测力板识别。收集来自着陆腿的四股大腿肌肉（内侧血管，外侧股外侧肌，内侧，绳肌和外侧绳肌）的同步EMG信号，并通过EMG系统进行放大。修剪肌电数据，归一化和过滤。比较处理后信号的均方根（RMS）值。结果表明，ACL重建小腿的大腿肌肉活动较低。踩脚之前，髋关节的伸展程度更大。足部撞击后髋关节和膝关节长时间弯曲，这延迟了解剖位置的恢复。

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