書字動作による手根管症候群スクリーニングシステム
Carpal Tunnel Syndrome Screening System by Handwiriting
2020
渡辺拓郎*，小山恭史*，梅本颯，藤田浩二，杉浦裕太（ * 共同筆頭著者）
Takuro Watanabe*,Takafumi Koyama*, Hayate Umemoto, Koji Fujita, Yuta Sugiura, * these authors contributed equally
[Reference /引用はこちら]
Takuro Watanabe*, Takafumi Koyama*, Eriku Yamada, Akimoto Nimura, Koji Fujita, and Yuta Sugiura, The Accuracy of a Screening System for Carpal Tunnel Syndrome using Hand Drawing, Journal of Clinical Medicine, MDPI. * These authors contributed equally. [DOI]
手根管症候群は、手根管を通る正中神経が圧迫されることで手指に痺れをきたす末梢神経障害である。重症化すると親指の動きが悪くなり、字が書きにくくなるなど手先の器用さに影響を及ぼすため、スクリーニングによる早期発見が望まれている。我々は、CTSのスクリーニング方法を開発するために、スタイラスを用いてタブレット画面に螺旋を描く際のスタイラスの軌跡とスタイラス先端の圧力を測定するタブレットアプリを開発した。さらにサポートベクターマシンを用いて参加者を非CTS患者とCTS患者に分類を目指した。実験を健常者31名、手根管症候群患者33名の協力を得て行った結果、感度と特異度はそれぞれ82%、71%となった。
Carpal tunnel syndrome (CTS), an entrapment neuropathy, becomes severe and thumb motion is reduced, which affects manual dexterity such as difficulties in writing; therefore, early detection of CTS by screening is desirable. To develop a screening method for CTS, we developed a tablet app to measure the stylus trajectory and pressure of the stylus tip when drawing a spiral on a tablet screen using a stylus and subsequently used these data as training data to predict the classification of participants as non-CTS or CTS patients using a support vector machine. We recruited 33 patients with CTS and 31 healthy volunteers for this study. From our results, non-CTS and CTS were classified by our screening method with 82% sensitivity and 71% specificity. Our CTS screening method can facilitate the screening for potential patients with CTS and provide a quantitative assessment of CTS.