Kyberd Peter J
University of New Brunswick, Fredericton, NB, Canada.
Prosthet Orthot Int. 2011 Sep;35(3):285-93. doi: 10.1177/0309364611418554.
It is important to measure the functional capabilities of a prosthesis in order to make informed decisions when prescribing a limb.
To measure the functional of a range of commercial single degree of freedom hands to act as baseline comparisons for the newer multi-axis hands.
Form-board and self-timed tasks.
Repeated measures with a single subject using a validated assessment tool. The test measured the function of three conventional, single axis, powered hands, controlled by five different myocontroller formats. One transcarpal device was also tested.
When controlled by the same type of two channel myoelectric controllers (proportional voluntary opening, voluntary closing) the overall functional scores were similar for all similar types of hand, with a maximum score of 94 out of 100. The smaller transcarpel hand had a score of 84. Only when a more limited single channel three state controller was used was the score much lower (81).
All of the hands were of a similar design and were set in a precision grip, but the precision grip did not achieve the highest individual grip score. Additionally, while the Southampton Hand Assessment Procedure (SHAP) score is dependent on the speed of execution of the task, the speed of the prosthesis did not have as great an impact on the score as the other variables.
This study provides comparative data between similar designs of commercial hands. This will allow clinicians to be better informed when they prescribe a device for a user.
为了在开具假肢处方时做出明智的决定，测量假肢的功能能力很重要。
测量一系列商用单自由度手部的功能，以便为新型多轴手部提供基线比较。
模板和自我计时任务。
使用经过验证的评估工具对单个受试者进行重复测量。该测试测量了三种传统的单轴动力手部的功能，这些手部由五种不同的肌电控制器形式控制。还测试了一种经腕部装置。
当由相同类型的双通道肌电控制器（比例式随意张开、随意闭合）控制时，所有相似类型手部的总体功能得分相似，满分100分的情况下最高得分为94分。较小的经腕部手部得分为84分。只有当使用更有限的单通道三态控制器时，得分才低得多（81分）。
所有手部设计相似，均设置为精确抓握，但精确抓握并未获得最高的个体抓握得分。此外，虽然南安普顿手部评估程序（SHAP）得分取决于任务执行速度，但假肢的速度对得分的影响不如其他变量大。
本研究提供了商用手部相似设计之间的比较数据。这将使临床医生在为用户开具设备处方时能有更充分的信息。
