Hoffman M D, Mitz M, Luisi M, Melville B R
Department of PM&R, Medical College of Wisconsin, Milwaukee 53226.
Arch Phys Med Rehabil. 1988 Aug;69(8):591-4.
Nerve conduction studies of the dorsal cutaneous ulnar nerve (DCU) have been suggested as a useful technique for identifying distal ulnar nerve lesions. In this study a standardized method was used to establish normal conduction parameters of the DCU that were compared to conduction parameters of the superficial radial sensory nerve (SR) in the same extremity. Fifty-five extremities of 33 neurologically healthy subjects aged 22 to 69 years (mean = 37; SD = 13) were examined. Dorsal hand skin temperature of each subject was 31 to 36 C. The DCU and SR were antidromically stimulated 14cm proximal to plastic-mounted bipolar electrodes placed on the dorsum of the hand over each nerve. Latency to onset, latency to peak, and amplitude (mean +/- 2SD) for the DCU were 2.2 +/- 0.3msec, 2.8 +/- 0.5msec, and 24 +/- 17 microV; and for the SR were 2.2 +/- 0.3msec, 2.8 +/- 0.3msec, and 32 +/- 18 microV, respectively. Significant correlations (p less than 0.005) were found between the DCU and SR latencies to onset, and DCU and SR latencies to peak. These results suggest that distal sensory latencies of the DCU and SR are similar, and that a paired study of these nerves may be useful in distinguishing distal ulnar nerve entrapment syndromes when routine studies are equivocal.
有人提出，对尺神经手背支（DCU）进行神经传导研究是识别尺神经远端病变的一种有用技术。在本研究中，采用标准化方法建立DCU的正常传导参数，并与同一肢体的桡神经浅支（SR）的传导参数进行比较。对33名年龄在22至69岁（平均 = 37岁；标准差 = 13岁）的神经功能正常的受试者的55个肢体进行了检查。每位受试者的手背皮肤温度为31至36摄氏度。在置于每根神经手背部的塑料安装双极电极近端14厘米处对DCU和SR进行逆向刺激。DCU的起始潜伏期、峰值潜伏期和波幅（平均值±2标准差）分别为2.2±0.3毫秒、2.8±0.5毫秒和24±17微伏；SR的分别为2.2±0.3毫秒、2.8±0.3毫秒和32±18微伏。DCU和SR的起始潜伏期之间以及DCU和SR的峰值潜伏期之间存在显著相关性（p < 0.005）。这些结果表明，DCU和SR的远端感觉潜伏期相似，并且当常规研究结果不明确时，对这些神经进行配对研究可能有助于区分尺神经远端卡压综合征。
