Bae T S, Choi K, Mun M
Korea Orthopaedics & Rehabilitation Engineering Center, Incheon, Korea.
J Med Eng Technol. 2009;33(2):130-5. doi: 10.1080/03091900701404043.
To evaluate quantitatively the contribution of each muscle to amputee gait during level walking and stair climbing in transfemoral amputees and healthy individuals, gait analysis and electromyography with transfemoral amputees (n = 8) and healthy adults (n = 10) were performed to evaluate muscle balance during each ambulatory task. Time - distance and kinematic parameters by gait analysis were calculated, and the rms EMG of major muscles and hamstring and tibialis anterior coactivity were measured by electromyography. Most kinematic parameters showed no statistical difference between each task, excluding pelvic tilt, pelvic obliquity and hip abduction. Major muscle activities and coactivities of hamstring and tibialis anterior showed that the stair ascent task needed excessive muscle activity compared with the stair descent task and level walking, and that muscle activity and coactivity of amputees were greater than those of healthy individuals, excluding hamstring coactivity during stair ascent (p < 0.05).
为了定量评估经股骨截肢者和健康个体在平地行走和爬楼梯过程中各肌肉对截肢者步态的贡献，对8名经股骨截肢者和10名健康成年人进行了步态分析和肌电图检查，以评估每个行走任务期间的肌肉平衡。通过步态分析计算时间-距离和运动学参数，并通过肌电图测量主要肌肉的均方根肌电图以及腘绳肌和胫骨前肌的共同激活。除骨盆倾斜、骨盆倾斜和髋关节外展外，大多数运动学参数在每个任务之间没有统计学差异。主要肌肉活动以及腘绳肌和胫骨前肌的共同激活表明，与下楼梯任务和平地行走相比，上楼梯任务需要更多的肌肉活动，并且截肢者的肌肉活动和共同激活大于健康个体，但上楼梯期间腘绳肌的共同激活除外（p<0.05）。
