Spinal Accessory Nerve Conduction Study to the Upper, Middle, and Lower Trapezius Muscles in Normal Subject in Korea |
Young Jin Ko, M.D., Sae Yoon Kang, M.D., Jong Hyun Kim, M.D., Jun Seong Kim, M.D. , Hyun Ju Yoo, M.D. |
Department of Rehabilitation Medicine, Catholic University Medical College |
정상성인 척수 부신경의 전도검사 |
고영진, 강세윤, 김종현, 김준성, 유현주 |
가톨릭대학교 의과대학 재활의학교실 |
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Abstract |
Injury of the spinal accessory nerve in posterior cervical triangle may result from a variety of causes. These include direct trauma, compression by lymph node or tumor, spontaneous accessory nerve palsy, and complication from surgical procedures. One of the most valuable method for diagnosis of spinal accessory nerve injury is measurement of its latencies. But we could scarcely find the useful electrodiagnostic data about spinal accessory nerve which was measured in normal subjects in Korea. We measured normal values of spinal accessory nerve latency in 71 volunteers, and clarified the correlation of latency with age, and of latency with conduction distance. Mean latencies of 142 spinal accessory nerves to the upper, middle, and lower trapezius muscles are 2.01±0.31 msec, 3.08±0.46 msec, and 4.54±0.74 msec, respectively. There is no significant correlation of latency with age, and of latency with conduction distance to the upper trapezius. Those are measured and analyzed as a preliminary conduction study for diagnosis of neck dissection patient. |
Key Words:
Accessory nerve, Trapezius, Neck dissection, Posterior neck triangle |
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