Oh S J, Kim H S, Ahmad B K
Muscle Nerve. 1984 Mar-Apr;7(3):218-25. doi: 10.1002/mus.880070306.
We have devised a method of sensory nerve conduction in the interdigital nerves of the foot using the near-nerve needle and signal averaging techniques. In 40 normal controls between the ages of 20 and 59, there was no difficulty in recording sensory compound nerve action potential (CNAP) in the various interdigital nerves. The amplitude of sensory CNAP ranged from 0.4-8.8 muV. The mean maximum nerve conduction velocities ranged from 33.3-40.5 M/second. In the group between 50-59 years old, nerve conduction changes due to aging were noted. In five patients with interdigital neuropathy (IDN) of the foot, a selective marked decrease in the amplitude of the CNAP in the involved interdigital nerve ("abnormal dip phenomenon") was the most characteristic electrophysiological finding. The present technique is capable of recording the sensory CNAPs in the interdigital nerves of the foot and confirming the diagnosis of IDN electrophysiologically.
我们设计了一种利用近神经针和信号平均技术来测定足部趾间神经感觉神经传导的方法。在40名年龄在20至59岁之间的正常对照者中，在各趾间神经记录感觉复合神经动作电位（CNAP）并无困难。感觉CNAP的波幅范围为0.4 - 8.8微伏。平均最大神经传导速度范围为33.3 - 40.5米/秒。在50 - 59岁的人群中，注意到了因衰老导致的神经传导变化。在5例足部趾间神经病（IDN）患者中，受累趾间神经的CNAP波幅出现选择性显著降低（“异常波谷现象”）是最具特征性的电生理表现。目前的技术能够记录足部趾间神经的感觉CNAP，并从电生理角度确诊IDN。
