Cassvan A, Rosenberg A, Rivera L F
Arch Phys Med Rehabil. 1986 May;67(5):290-2.
This is a retrospective study of the involvement of the ulnar nerve in patients with electrodiagnostic evidence of carpal tunnel syndrome as defined by median sensory nerve action potential (SNAP) greater than 3.6msec at the wrist and/or motor distal latency in excess of 4.3msec. The study included 248 patients, 63 (25%) with unilateral and 185 (75%) with bilateral carpal tunnel syndrome. The electrodiagnostic criteria for ulnar nerve involvement was a SNAP peak latency greater than 3.7msec and/or motor distal latency in excess of 4.2msec. One hundred fourteen patients (46%) had delayed ulnar SNAP peak at the wrist; of these, 100 cases had bilateral ulnar nerve involvement and 14 had unilateral abnormalities. Slowing of the motor nerve conduction velocity for the elbow-wrist segment was noted in 24% and 15% of the study group for the median and ulnar nerves, respectively. An incidental finding was the presence of "double crush syndrome" in 35 patients (14%). The results of this study suggest the frequent association of ulnar nerve involvement at the wrist for sensory fibers and carpal tunnel syndrome.
这是一项回顾性研究，研究对象为腕部正中感觉神经动作电位（SNAP）大于3.6毫秒和/或运动远端潜伏期超过4.3毫秒所定义的具有电诊断证据的腕管综合征患者中尺神经的受累情况。该研究纳入了248例患者，其中63例（25%）为单侧腕管综合征，185例（75%）为双侧腕管综合征。尺神经受累的电诊断标准为SNAP峰潜伏期大于3.7毫秒和/或运动远端潜伏期超过4.2毫秒。114例患者（46%）腕部尺神经SNAP峰延迟；其中，100例为双侧尺神经受累，14例为单侧异常。研究组中分别有24%和15%的患者正中神经和尺神经的肘-腕段运动神经传导速度减慢。一个意外发现是35例患者（14%）存在“双卡综合征”。本研究结果提示，腕部感觉纤维的尺神经受累与腕管综合征常相关。
