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제목 Effect of Finger Motion on Transverse Median Nerve Movement in the Carpal Tunnel 소속 Veterans Health Service Medical Center, Department of Rehabilitation Medicine1, Korea University Guro Hospital, Department of Rehabilitation Medicine2 저자 Bo Ram Ahn1*, Hyo Jung Kang 1†, Joon Shik Yoon1, Jung Min Kwak1, Seong Yoon Jeong1 Introduction: We used ultrasonography (US) to investigate the effects of finger motion on the movement of the median nerve in patients with carpal tunnel syndrome (CTS) and the correlation between these US parameters and CTS severity. Methods: Ultrasonographic measures were performed in 23 control wrists and 22 CTS wrists in women. During first through third finger flexion and grip motion, median nerve movements were obtained using US and tracing program (Fig.1). Results: Nerve movements during third finger flexion in the dorsopalmar axis and grip motion in both axes, and during second finger flexion in the radioulnar axis differed significantly between control and CTS groups (Table 1). US parameters correlated negatively with the cross sectional area (Fig 2). Conclusions: This study showed that transverse median nerve movements decreased during grip using US and were negatively correlated with CTS severity. File.1: Table1.jpgTable 1. Comparison of the median nerve movements between the control and CTS groups. * P < 0.05 Abbreviations: DP, Dorsopalmar axis; RU, Radioulnar axis; CTS, carpal tunnel syndromeFile.2: Fig1.jpgFigure 1. Ultrasonographic measurements of the median nerve movement in the wrist in the transverse view in the resting state (A) and following finger movement (B). (A) Measuring the distance between the vertical line to the highest point of the scaphoidFile.3: Fig2.jpgFigure 2. Correlation between CSA of the nerve and median nerve movements in controls and patients with CTS. Abbreviations: CSA, cross sectional area; CTS, carpal tunnel syndrome, DP1, median nerve movement in the dorsopalmar axis during first finger flex
