The influence of a hydraulic prosthetic ankle on residual limb loading during sloped walking.
The influence of a hydraulic prosthetic ankle on residual limb loading during sloped walking.
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DOI：
10.1371/journal.pone.0173423
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Hansen AH
中科院分区：
文献类型：
--
作者：
Koehler-McNicholas SR;Nickel EA;Medvec J;Barrons K;Mion S;Hansen AH
近年来，已经开发了许多假肢踝足装置，以解决下肢截肢者倾斜行走的需求。本研究的目的是比较被动，液压踝足假肢的性能，两个相关的，非液压踝关节的基础上，他们的能力，以尽量减少在一系列倾斜行走任务的个人与经胫骨截肢的插座反作用时刻。经过两周的适应期，运动学数据收集了7名受试者与经胫骨截肢步行在仪器跑步机设置在不同的斜坡。总的来说，本研究无法发现在步行的单支撑阶段，具有液压运动范围的踝足假体与其他相关踝足假体设计（刚性踝关节、多轴踝关节）之间的假肢接受腔远端扭矩存在显著差异。此外，在这项研究中，接受测试的任何踝足假体的插座舒适度和感知的努力没有显着差异。这些结果表明，需要进一步的工作，以确定是否更先进的设计（例如，具有液压特征的微处理器控制、动力踝-足设计的那些）可以为假肢使用者提供更多的仿生功能。
In recent years, numerous prosthetic ankle-foot devices have been developed to address the demands of sloped walking for individuals with lower-limb amputation. The goal of this study was to compare the performance of a passive, hydraulic ankle-foot prosthesis to two related, non-hydraulic ankles based on their ability to minimize the socket reaction moments of individuals with transtibial amputation during a range of sloped walking tasks. After a two-week accommodation period, kinematic data were collected on seven subjects with a transtibial amputation walking on an instrumented treadmill set at various slopes. Overall, this study was unable to find significant differences in the torque at the distal end of the prosthetic socket between an ankle-foot prosthesis with a hydraulic range-of-motion and other related ankle-foot prosthesis designs (rigid ankle, multiaxial ankle) during the single-support phase of walking. In addition, socket comfort and perceived exertion were not significantly different for any of the ankle-foot prostheses tested in this study. These results suggest the need for further work to determine if more advanced designs (e.g., those with microprocessor control of hydraulic features, powered ankle-foot designs) can provide more biomimetic function to prosthesis users.