Tada Kaoru, Murai Atsuro, Nakamura Yuta, Nakade Yusuke, Tsuchiya Hiroyuki
Department of Orthopaedic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan.
Department of Clinical Laboratory, Kanazawa University Hospital, Kanazawa, Japan.
Front Neurol. 2022 Mar 11;13:851108. doi: 10.3389/fneur.2022.851108. eCollection 2022.
Although the index finger is generally used for sensory nerve conduction study in cases of carpal tunnel syndrome, there are reports that the middle finger should be used. The purpose of this study was to compare the results of sensory nerve conduction studies of the index finger and middle finger in patients with carpal tunnel syndrome. Among the 120 hands of 93 patients who were diagnosed with carpal tunnel syndrome and underwent carpal tunnel release surgery at our hospital, 54 hands of 48 patients who showed waveforms in sensory nerve conduction studies both index and middle fingers were included. 6 hands of 6 patients who showed no waveform in the index or middle finger, and 60 hands of 39 patients who showed no waveform in both index and middle finger were excluded. The subjects were 14 males and 34 females, and their ages were 66.2 years. The preoperative sensory nerve action potential (μV) and sensory nerve conduction velocity (m/s) of the index and middle fingers were tested using Wilcoxon's signed rank test. Spearman's rank correlation coefficient was also calculated for the results of the index and middle fingers. Sensory nerve action potentials were 2.0 in the index finger and 1.8 in the middle finger, with significantly lower in the middle finger. Sensory nerve conduction velocity was 30.1 in the index finger and 27.2 in the middle finger, with significantly lower in the middle finger. The correlation coefficients of sensory nerve action potentials and conduction velocities between the index finger and middle finger were 0.82 and 0.96, respectively, both of which showed a significant correlation. The results of the sensory nerve conduction studies of the middle finger were significantly worse than those of the index finger in cases of carpal tunnel syndrome. In addition, there was a strong correlation between the results of the index finger and the middle finger. The results of this study suggest that the nerve bundle to the middle finger may be more strongly affected than the nerve bundle to the index finger in cases of carpal tunnel syndrome.
虽然在腕管综合征病例中，通常使用食指进行感觉神经传导研究，但有报告称应使用中指。本研究的目的是比较腕管综合征患者食指和中指感觉神经传导研究的结果。在我院诊断为腕管综合征并接受腕管松解手术的93例患者的120只手中，纳入了48例患者的54只手，这些手在食指和中指的感觉神经传导研究中均显示出波形。排除了6例患者的6只手，这些手在食指或中指中未显示波形，以及39例患者的60只手，这些手在食指和中指中均未显示波形。受试者为14名男性和34名女性，年龄为66.2岁。使用Wilcoxon符号秩检验测试食指和中指术前的感觉神经动作电位（μV）和感觉神经传导速度（m/s）。还计算了食指和中指结果的Spearman秩相关系数。食指的感觉神经动作电位为2.0，中指为1.8，中指明显较低。食指的感觉神经传导速度为30.1，中指为27.2，中指明显较低。食指和中指之间的感觉神经动作电位和传导速度的相关系数分别为0.82和0.96，两者均显示出显著相关性。在腕管综合征病例中，中指感觉神经传导研究的结果明显比食指差。此外，食指和中指的结果之间存在很强的相关性。本研究结果表明，在腕管综合征病例中，支配中指的神经束可能比支配食指的神经束受到更强的影响。
