GAIT OF UNILATERAL BELOW-KNEE AMPUTEES
GAIT OF UNILATERAL BELOW-KNEE AMPUTEES
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单侧膝下截肢者的步态
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
J. Breakey
中科院分区：
文献类型：
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作者：
J. Breakey
膝下截肢者失去了部分运动系统，不仅失去了静态支撑结构，还失去了足踝复合体的动态功能。下肢假肢很容易提供静态结构支撑，但不能提供与已经丧失的肌肉活动相对应的动力学功能。因此，BK截肢者的良好的位置运动需要在剩余下肢的关节中进行适应，并且因此需要由下肢的剩余肌肉组织进行补偿。在一项关于BK截肢者步态的研究中，使用了5名活跃的男性单侧BK截肢者（1）。髁上假体采用组配式假体，髁上假体采用PTB关节窝（2）和SACH足。两只鞋上都使用了电子开关来测量站立阶段的足部位置。在截肢侧，膝关节活动度由电测角计测量。通过使用肌电图仪和表面电极记录肌肉活动。研究的肌肉是患侧的臀大肌、股四头肌组和腘绳肌组;健侧的臀大肌和股外侧肌。
The below-knee amputee has lost part of his locomotive system, not only the static supporting structure, but dynamic function of the foot-ankle complex as well. Lower-limb prostheses easily provide static structural supports, but not dy namic functions that correspond to muscle activi ties that have been lost. Consequently, good loco motion by the BK amputee requires adaptation in the joints of the remaining lower limb and, thus, compensation by the remaining musculature of the lower limbs. Five active male unilateral BK amputees were used in a study of BK amputee gait (1). The sub jects wore modular prostheses, with the supra condylar suspension variation of the PTB socket (2) and a SACH foot. Electrical switches were used on both shoes to measure foot position dur ing stance phase. On the amputated side, knee motion was measured by an electrogoniometer. Muscle activity was recorded by use of an electromyograph and surface electrodes. The muscles investigated were the gluteus maximus, the quadriceps groups, and the hamstring group on the affected side; the gluteus maximus and vastus lateralis on the unaffected side.