Miller Mark Carl, Nair Manoj, Baratz Mark E
Allegheny General Hospital, Pittsburgh, PA 15212, USA.
J Biomech Eng. 2005 Nov;127(6):998-1000. doi: 10.1115/1.2049336.
Diagnostic and rehabilitative assessments of hand function commonly omit measurement of twisting strength even though many activities of daily living require turning handles, lids, and objects of many sizes. A simple device to quantify twisting strength was designed and constructed to establish normative data and test hypotheses about hand function. The instrument is easy to use and includes an electronic torsional load cell and disks of several sizes. Tests were conducted on the dominant and nondominant hands of 64 normal subjects and 13 arthritic patients with arthritis of the thumb carpometacarpal joint. Hands were tested with disks ranging in diameter from 2.5 to 12.5 cm. A three-way repeated measures analysis showed that gender (p < 0.001), handedness (p < 0.001), and disk size (p < 0.001) had significant effects. There was no difference between radial and ulnar deviation strengths (p = 0.365). The arthritic group had significantly reduced strength (p < 0.02). Nine subjects were tested twice, with 1 day between tests: no differences occurred between the first and second testing (p = 0.930). The ability to distinguish the test groups with reproducible results proves that the device fulfills all basic requirements; continued testing and development are warranted.
手部功能的诊断和康复评估通常会忽略对扭转力量的测量，尽管许多日常生活活动都需要转动把手、盖子以及各种尺寸的物体。我们设计并制造了一种简单的装置来量化扭转力量，以建立正常数据并检验有关手部功能的假设。该仪器使用方便，包括一个电子扭力传感器和几种尺寸的圆盘。对64名正常受试者和13名患有拇指腕掌关节关节炎的关节炎患者的优势手和非优势手进行了测试。使用直径从2.5厘米到12.5厘米不等的圆盘对手部进行测试。三因素重复测量分析表明，性别（p < 0.001）、利手（p < 0.001）和圆盘尺寸（p < 0.001）有显著影响。桡侧和尺侧偏斜力量之间没有差异（p = 0.365）。关节炎组的力量明显降低（p < 0.02）。对9名受试者进行了两次测试，两次测试间隔1天：第一次和第二次测试之间没有差异（p = 0.930）。能够以可重复的结果区分测试组证明该装置满足所有基本要求；值得继续进行测试和开发。
