上臂桡神经运动传导研究。
Radial motor nerve conduction studies in the upper arm.
机构信息
Department of Functional Diagnostics, Republican Research and Clinical Center of Neurology and Neurosurgery, Minsk, Belarus.
Laboratory of Clinical Pathophysiology of Nerve System, Republican Research and Clinical Center of Neurology and Neurosurgery, Minsk, Belarus.
出版信息
Muscle Nerve. 2020 Sep;62(3):363-368. doi: 10.1002/mus.27006. Epub 2020 Jul 5.
INTRODUCTION
The main goal of this study was to determine the contribution of the anterior forearm muscles to the compound muscle action potential (CMAP) recorded from the extensor digitorum (ED) after proximal stimulation.
METHODS
Twenty-one healthy volunteers and 114 patients with compressive and traumatic radial neuropathies were examined. Stimulation was carried out at six different points: distal third of the upper arm; Erb's point; axilla; medial upper arm; antecubital fossa; and ulnar groove.
RESULTS
In the control group, Erb's CMAP area was significantly greater than the distal CMAP area. In compressive neuropathy, there was conduction block, but no change in conduction velocity. There were no differences in Erb's CMAP latencies between the control group and the neuropathies group.
DISCUSSION
CMAPs recorded over the ED with stimulation at the brachial plexus represent the sum of the motor unit action potentials of the posterior and anterior forearm muscles.
简介
本研究的主要目的是确定在前臂肌肉对伸指肌（ED）复合肌肉动作电位（CMAP）记录中的贡献，近端刺激后。
方法
对 21 名健康志愿者和 114 名压迫性和创伤性桡神经病变患者进行了检查。刺激在六个不同点进行：上臂远端三分之一；Erb 点；腋窝；上臂内侧；肘前窝；和尺骨沟。
结果
在对照组中，Erb 的 CMAP 面积明显大于远端 CMAP 面积。在压迫性神经病中，存在传导阻滞，但传导速度没有变化。在 Erb 的 CMAP 潜伏期方面，对照组和神经病组之间没有差异。
讨论
在臂丛刺激时记录的 ED 的 CMAP 代表后前臂和前前臂肌肉的运动单位动作电位的总和。
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