Effects of socket size on metrics of socket fit in trans-tibial prosthesis users
Effects of socket size on metrics of socket fit in trans-tibial prosthesis users
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DOI：
10.1016/j.medengphy.2017.03.003
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发表时间：
2017-06-01
影响因子：
2.2
通讯作者：
Allyn, Katheryn J.
中科院分区：
文献类型：
--
作者：
Sanders, Joan E.;Youngblood, Robert T.;Allyn, Katheryn J.
这项研究的目的是进行初步工作，以确定定量指标，以区分经胫骨截肢患者的良好插座和过大的插座。结果可用于为与牙槽窝置换相关的临床实践提供信息。对具有良好残肢感觉的社区步行者（K 级 3 或 4）进行了交叉研究。为每名参与者提供了两个插座，一个是其规定插座的复制品，另一个是根据规定插座的配合质量放大或缩小 1.8 毫米（类似于插座体积的 6%）的改良插座。这两个插座被称为较大插座和较小插座。当参与者佩戴每个插座 4 周时，对活动进行监测。参与者的步态；自我报告的满意度、配合质量和绩效；插座舒适度；并评估从早上到下午的肢体液体量变化。对图和估计效应大小（以平均差除以标准差来衡量）的视觉分析显示，步长不对称、步长不对称、前部和前远端早晨到下午的液体量变化、插座舒适度评分和自我报告效用的影响最大。这些变量可能是早期检测插座配合恶化的可行指标，并且应该在更大规模的临床研究中进行测试。 (C) 2017 年 IPEM。由爱思唯尔有限公司出版。保留所有权利。
The purpose of this research was to conduct a preliminary effort to identify quantitative metrics to distinguish a good socket from an oversized socket in people with trans-tibial amputation. Results could be used to inform clinical practices related to socket replacement. A cross-over study was conducted on community ambulators (K-level 3 or 4) with good residual limb sensation. Participants were each provided with two sockets, a duplicate of their as-prescribed socket and a modified socket that was enlarged or reduced by 1.8 mm (similar to 6% of the socket volume) based on the fit quality of the as-prescribed socket. The two sockets were termed a larger socket and a smaller socket. Activity was monitored while participants wore each socket for 4 weeks. Participants' gait; self-reported satisfaction, quality of fit, and performance; socket comfort; and morning-to-afternoon limb fluid volume changes were assessed. Visual analysis of plots and estimated effect sizes (measured as mean difference divided by standard deviation) showed largest effects for step time asymmetry, step width asymmetry, anterior and anterior-distal morning-to-afternoon fluid volume change, socket comfort score, and self-reported utility. These variables may be viable metrics for early detection of deterioration in socket fit, and should be tested in a larger clinical study. (C) 2017 IPEM. Published by Elsevier Ltd. All rights reserved.