臂丛肌阵挛
Brachial plexus myoclonus.
作者信息
Banks G, Nielsen V K, Short M P, Kowal C D
出版信息
J Neurol Neurosurg Psychiatry. 1985 Jun;48(6):582-4. doi: 10.1136/jnnp.48.6.582.
Abstract
Rhythmic myoclonus in an arm began abruptly following an injury and persisted continuously for six years. Topographical EMG showed abnormal activity confined to muscles innervated by the axillary and radial nerves from the posterior cord of the brachial plexus. Abduction of the arm above horizontal level stopped myoclonus and EMG discharges. EEG was normal. It is suggested that the myoclonus was caused by mechanical irritation of the posterior cord of the brachial plexus.
摘要
一次受伤后，手臂突然出现节律性肌阵挛，并持续了六年。局部肌电图显示异常活动局限于由臂丛后束发出的腋神经和桡神经支配的肌肉。手臂外展超过水平位置可使肌阵挛和肌电图放电停止。脑电图正常。提示肌阵挛是由臂丛后束的机械性刺激引起的。
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