Ikeda Kazuo, Osamura Naoki, Tomita Katsuro
Department of Orthopaedic Surgery, School of Medicine, Kanazawa University, Kanazawa, Japan.
J Hand Surg Am. 2006 Jul-Aug;31(6):925-9. doi: 10.1016/j.jhsa.2006.03.004.
To clarify which part of the median nerve is the most compressed and to compare carpal canal pressure with the latency of the sensory nerve potential and the duration of symptoms.
Fifteen patients with idiopathic carpal tunnel syndrome were studied using a pressure guidewire system to record canal pressure. The wire was introduced from the distal end of the carpal canal to 2 cm proximal to the distal wrist crease (DWC) and then retracted in 5-mm increments using an image intensifier to guide the progress. A nerve conduction study was performed, and all patients were asked how long the symptoms lasted.
Carpal canal pressure was significantly higher 5 to 15 mm distal to the DWC. The most compressed point was 10 mm distal to the DWC, with a pressure of 44.9 +/- 26.4 mm Hg. The correlation coefficient between the highest canal pressure and the latency was 0.393 and between highest canal pressure and duration of symptoms was 0.402.
Our study showed that the most compressed part of the median nerve in the carpal canal is 10 mm distal to the DWC. The carpal canal pressure was related to the latency and to the duration of symptoms.
明确正中神经的哪一部分受压最严重，并比较腕管压力与感觉神经电位潜伏期及症状持续时间。
对15例特发性腕管综合征患者使用压力导丝系统记录腕管压力。将导丝从腕管远端插入至远侧腕横纹（DWC）近端2 cm处，然后在影像增强器引导下以5 mm的增量回撤。进行神经传导研究，并询问所有患者症状持续了多长时间。
在DWC远侧5至15 mm处，腕管压力显著更高。受压最严重的点在DWC远侧10 mm处，压力为44.9±26.4 mmHg。最高腕管压力与潜伏期之间的相关系数为0.393，最高腕管压力与症状持续时间之间的相关系数为0.402。
我们的研究表明，腕管内正中神经受压最严重的部分在DWC远侧10 mm处。腕管压力与潜伏期及症状持续时间有关。
