Reddy M P
Arch Phys Med Rehabil. 1983 May;64(5):209-11.
The forearm medial cutaneous nerve is a pure sensory branch from the medial cord of the brachial plexus. Its fibers are derived from the eighth cervical and first thoracic nerves. A simple, easily reproducible antidromic technique for studying conduction of the forearm medial cutaneous nerve is described with the knowledge (obtained from cadaver dissections) of its exact topography. Sixty nerves were studied in 30 able-bodied adults, 15 women and 15 men. Surface stimulation was done over the medial aspect of the middle of the arm at a level where the nerve pierces the deep fascia. Surface recordings were made 18cm distally over the course of its volar branch. Action potentials were obtained in 100% of the subjects without electronic averaging. Mean values obtained were as follows: latency to onset 2.73 +/- 0.17 msec; latency to peak 3.31 +/- 0.19 msec; conduction velocity of the fastest fibers 65.9 +/- 4.3 m/s; amplitude 15.4 +/- 4.1 microvolts, and the mean difference in latency between the right and left nerves in the same subject was 0.1 msec. Conduction studies of this nerve should be useful in electrodiagnostic evaluation of peripheral neuropathy (particularly in below amputees), local neuropathic conditions, and entrapment syndromes involving the medial cord of the brachial plexus.
前臂内侧皮神经是臂丛内侧束发出的纯感觉支。其纤维来自颈8和胸1神经。本文结合（通过尸体解剖获得的）该神经确切的局部解剖知识，描述了一种简单、易于重复的逆向技术，用于研究前臂内侧皮神经的传导。对30名身体健全的成年人（15名女性和15名男性）的60条神经进行了研究。在神经穿出深筋膜的水平，于上臂中部内侧进行表面刺激。在其掌侧支走行的远端18cm处进行表面记录。无需电子平均处理，100%的受试者均记录到动作电位。获得的平均值如下：起始潜伏期2.73±0.17毫秒；峰值潜伏期3.31±0.19毫秒；最快纤维的传导速度65.9±4.3米/秒；波幅15.4±4.1微伏，同一受试者左右神经潜伏期的平均差异为0.1毫秒。该神经的传导研究在外周神经病变（特别是截肢平面以下的患者）、局部神经病变以及涉及臂丛内侧束的卡压综合征的电诊断评估中应具有重要作用。
