Gait patterns in transtibial amputee fallers vs. non-fallers: Biomechanical differences during level walking
Gait patterns in transtibial amputee fallers vs. non-fallers: Biomechanical differences during level walking
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DOI：
10.1016/j.gaitpost.2008.10.062
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发表时间：
2009-04-01
期刊：
影响因子：
2.4
通讯作者：
Polman, Remco
中科院分区：
文献类型：
--
作者：
Vanicek, Natalie;Strike, Siobhan;Polman, Remco
与年龄匹配的身体健全的人相比，经胫截肢者跌倒的风险增加。本研究的目的是通过调查关节运动学来比较近期截肢跌倒者与非跌倒者在水平行走时的步态模式。时空参数的动力学和变异性。11名参与者（跌倒者= 6;非跌倒者= 5）以他们自己选择的速度沿着沿着10米的人行道行走，同时收集三维运动学和动力学数据。跌倒者的第一峰值垂直GRF（p = 0.01）和假肢上的负载率显著高于非跌倒者（p = 0.03）。两组的关节活动度相似。踝关节和髋关节的关节力矩曲线相似，膝关节的差异更明显。在完整的肢体上，与非跌倒者相比，跌倒者还显示出显著更小的A1和更大的H2功率爆发以及更大的摆动持续时间的可变性。非跌倒者的负荷率和膝关节力矩较小，这表明他们可以通过修改膝关节伸肌的肌肉需求来进行补偿调整，以保持假体侧的稳定性。这项研究表明，福尔斯预防和假肢康复计划应侧重于提高假肢的膝关节肌肉力量，以及完好肢体的偏心踝关节和髋关节力量，以提高稳定性和进展，特别是在将重量转移到假肢的单个支撑件上时。(C)2008 Elsevier B. V.保留所有权利。
Transtibial amputees are at an increased risk of falling compared to age-matched, able-bodied individuals. The aim of this study was to compare the gait patterns of recent amputee fallers vs. non-fallers during level walking by investigating joint kinematics. kinetics and variability of temporal-spatial parameters. Eleven participants (fallers = 6; non-fallers = 5) walked along a 10-m walkway at their self-selected pace while three-dimensional kinematic and kinetic data were collected. The fallers had a significantly greater first peak vertical GRF (p = 0.01) and load rate on the prosthetic limb than the non-fallers (p = 0.03). joint range of motion was similar between the two groups. joint moment profiles were similar for the ankle and hip, with more noticeable differences at the knee. On the intact limb, the fallers also showed significantly smaller A] and larger H2 power bursts and greater variability of swing time duration compared to the non-fallers. The non-fallers had a smaller load rate and knee moment that remained extensor suggesting they could make compensatory adjustments to maintain stability on the prosthetic side by modifying muscular demands of the knee extensors. This research suggests that falls prevention and prosthetic rehabilitation programmes should focus on improving knee muscle strength of the prosthetic limb, and eccentric ankle and hip strength of the intact limb, to improve stability and progression, particularly during weight transfer onto single support of the prosthetic limb. (C) 2008 Elsevier B.V. All rights reserved.