Development of the Perfect O Sign Quantification Tool
Development of the Perfect O Sign Quantification Tool
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完美 O 标志量化工具的开发
DOI：
10.11596/asiajot.18.103
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
Shuichi Matsuda
中科院分区：
文献类型：
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作者：
Maki Ando;Ryosuke Ikeguchi;Tomoki Aoyama;Keisuke Irie;Masakatsu Takeda;Kohei Mukaiyama;Rie Yamawaki;Akemi Maeda;Takashi Noguchi;Manabu Nankaku;Hiromu Ito;Shuichi Matsuda
目的：腕管综合征的完美O征常被评价，但目前尚无明确的标准。本研究的目的是开发一种工具，用于量化的完美的O标志，并探讨在健康subjects using this Methods.Methods的完美的O标志的值：参与者是健康的20- 30岁的志愿者（n= 13），没有任何临床症状的腕管综合征。采用表面肌电图测量拇短展肌（APB）、第一骨间背侧肌（FDI）、指浅屈肌（FDS）和指总伸肌（EDC）在中立位、背屈位和掌屈位三种不同腕关节位置下完成完美O征时的振幅。结果：背屈位的FDI/APB比值显著低于掌屈位，背屈位的FDS/APB比值显著低于其他两个腕位。基于这些结果，开发了一种将手腕保持在背屈位置的装置。13名健康志愿者使用该装置完成的完美O征的平均圆度为80.46± 9.47%.结论：腕关节背屈可以在完成完美O征的同时减少其他肌肉的影响.完美的O符号可以通过计算圆度来量化。
Objective: The perfect O sign is often evaluated in carpal tunnel syndrome but there are no clear criteria. The purpose of this study is to develop a tool for quantifying the perfect O sign and to investigate the values of the perfect O sign in healthy subjects using this method.Methods: Participants are healthy 20-to 30-year-old volunteers (n= 13) without any clinical symptoms of carpal tunnel syndrome. Surface electromyogram was used to measure the amplitude of the abductor pollicis brevis (APB), first dorsal interosseous muscle (FDI), flexor digitorum superficialis (FDS), and extensor digitorum communis (EDC) while performing the perfect O sign in three different wrist positions: neutral, dorsiflexion, and palmar flexion. The roundness of the perfect O sign in healthy subjects was measured by approximating a circle using 7 points in the photo captured by a smartphone and imported to a personal computer.Results: The FDI/APB ratio was significantly lower in the dorsiflexion position than that in the palmar flexion position, and the FDS/APB ratio had a significantly lower dorsiflexion position than that of the other two wrist positions. Based on these results, a device was developed that holds the wrist in the dorsiflexion position. The mean roundness of the perfect O sign using the device in 13 healthy volunteers was 80.46±9.47%.Conclusions: Dorsiflexion of the wrist can minimize the effect of other muscles while performing the perfect O sign. The perfect O sign can be quantified by calculating the roundness.