Foley Brian S, Roslonski Eric T, Buschbacher Ralph M
Department of Physical Medicine and Rehabilitation, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
Arch Phys Med Rehabil. 2006 Jan;87(1):88-91. doi: 10.1016/j.apmr.2005.08.124.
To derive a normative database for nerve conduction values of the median nerve to the pronator quadratus using a large and varied subject population.
Descriptive study.
Private office or university-based clinic.
Volunteers (N=207), recruited, without risk factors for neuropathy.
Not applicable.
Onset latency, duration, amplitude, and area were recorded for all subjects. Side-to-side variability was calculated and the normative ranges were derived (97th percentile of observed values).
Because the latencies increased with longer distances (longer forearms), the data were divided into 3 categories. The mean latency for those subjects whose distance from stimulator to recording electrode was 23 cm or less was 3.8+/-0.4 ms; the comparable values for those subjects with distances of 23.5 to 24.5 cm was 4.0+/-0.4 ms; and for those with distances of 25 cm and more, 4.5+/-0.4 ms. The amplitude and area varied with age. The mean amplitude for those subjects under 60 years of age was 4.4+/-1.8 mV, while those 60 years and over had an amplitude of 3.7+/-1.7 mV. The upper limit of normative side-to-side variability for latency was 0.6 ms, and the upper limit decrease in amplitude from 1 side to the other was 37%.
This study establishes normative values for the median motor nerve conduction to the pronator quadratus.
利用大量多样化的受试者群体，得出正中神经至旋前方肌神经传导值的标准数据库。
描述性研究。
私人诊所或大学诊所。
招募的志愿者（N = 207），无神经病变风险因素。
不适用。
记录所有受试者的起始潜伏期、持续时间、波幅和面积。计算双侧差异并得出标准范围（观察值的第97百分位数）。
由于潜伏期随距离增加（前臂更长）而延长，数据分为3类。刺激点至记录电极距离为23 cm或更短的受试者，平均潜伏期为3.8±0.4 ms；距离为23.5至24.5 cm的受试者，相应值为4.0±0.4 ms；距离为25 cm及以上的受试者，为4.5±0.4 ms。波幅和面积随年龄变化。60岁以下受试者平均波幅为4.4±1.8 mV，60岁及以上受试者波幅为3.7±1.7 mV。潜伏期双侧差异的标准上限为0.6 ms，一侧至另一侧波幅降低的标准上限为37%。
本研究确立了正中神经至旋前方肌运动神经传导的标准值。
