Staying in dynamic balance on a prosthetic limb: A leg to stand on?
Staying in dynamic balance on a prosthetic limb: A leg to stand on?
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DOI：
10.1016/j.medengphy.2016.02.013
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发表时间：
2016-06-01
影响因子：
2.2
通讯作者：
Otten, Bert
中科院分区：
文献类型：
--
作者：
Curtze, Carolin;Hof, At L.;Otten, Bert
由于失去了一条小腿，截肢者缺乏对脚踝的主动肌肉授权控制，而这对平衡控制是很重要的。我们研究了胫骨截肢者在假体上的单腿站姿与窄脊上的健全肢体平衡。当在假肢上保持平衡时，压力中心的侧向位移减小，并通过增加反旋转来补偿。我们发现，假肢上的单腿站立可以比作在狭窄的山脊上保持平衡。站在假肢上所涉及的平衡机制与在40毫米到20毫米宽的狭窄脊线上保持平衡的机制相同。然而，在狭窄的山脊上与健全的肢体保持平衡的能力只是对截肢者站在假肢上的能力的微弱预测。在假肢上单腿站立平衡不是一种常见的活动。因此，用健全的肢体进行补偿的能力在功能上可能比在假肢上保持动态平衡的能力更重要。(C)2016年IPEM。爱思唯尔有限公司出版。保留所有权利。
With the loss of a lower limb, amputees lack the active muscle empowered control of the ankle that is important for balance control. We examined single-leg stance on prosthesis vs. sound limb balancing on narrow ridges in transtibial amputees. When balancing on the prosthetic limb, the lateral displacement of the center of pressure was reduced and was compensated by an increase in counter-rotation. We show that single-leg stance on a prosthetic limb can be compared to balancing on a narrow ridge. Standing on a prosthetic limb involves the same balance mechanisms as balancing on narrow ridges of 40-mm to 20-mm width. Yet, the ability to balance on a narrow ridge with the sound limb was only a weak predictor for an amputee's ability to stand on the prosthetic limb. Balancing in single-leg stance on a prosthetic limb is not a common activity. The ability to compensate with the sound limb may therefore be functionally more important than the ability to stay in dynamic balance on the prosthetic limb. (C) 2016 IPEM. Published by Elsevier Ltd. All rights reserved.