Jung Ji Won, Park Yu Chan, Lee Jae Young, Park Jae Hyeon, Jang Seong Ho
Department of Rehabilitation Medicine, Hanyang University Hospital, Seoul 04763, South Korea.
Department of Rehabilitation Medicine, Hanyang University Guri Hospital, Guri 11923, South Korea.
World J Clin Cases. 2021 Feb 16;9(5):1237-1246. doi: 10.12998/wjcc.v9.i5.1237.
Isolated musculocutaneous nerve injury is a rare condition. Herein, we report the first case of bilateral musculocutaneous neuropathy after vigorous stretching of both upper extremities with normal results of sensory nerve action potential. Clinicians should be aware of this rare condition that can appear bilaterally. In addition, the interpretation of the aberrant electrodiagnostic study results of this case was discussed.
A 29-year-old male complaining of bilateral forearm tingling and upper extremity weakness visited the outpatient clinic. The symptoms began 6 mo prior, and he visited another hospital before visiting our department. The diagnosis was not made even after cervical spine magnetic resonance imaging, electrodiagnostic study, brain magnetic resonance imaging, and arteriography were conducted. The patient performed unique exercises that stretched the pectoralis minor and coracobrachialis muscles. On the follow-up electrodiagnostic study, abnormal spontaneous activities in the bilateral biceps and brachialis muscles were observed. The patient was diagnosed with bilateral musculocutaneous neuropathy. Steroid pulse therapy was administered for approximately 6 wk. After treatment, his muscle strength returned to the predisease condition.
Clinicians should be aware of this condition, have adequate understanding of anatomy, and advise to correct inappropriate exercises.
孤立性肌皮神经损伤是一种罕见的病症。在此，我们报告首例在双上肢剧烈伸展后出现双侧肌皮神经病变且感觉神经动作电位结果正常的病例。临床医生应意识到这种可能双侧出现的罕见病症。此外，还讨论了该病例异常电诊断研究结果的解读。
一名29岁男性因双侧前臂刺痛和上肢无力就诊于门诊。症状始于6个月前，在来我们科室之前他曾就诊于另一家医院。即使进行了颈椎磁共振成像、电诊断研究、脑磁共振成像和血管造影，仍未明确诊断。该患者进行了拉伸胸小肌和肱二头肌的独特锻炼。在后续的电诊断研究中，观察到双侧肱二头肌和肱肌出现异常自发电活动。该患者被诊断为双侧肌皮神经病变。给予了约6周的类固醇脉冲治疗。治疗后，他的肌力恢复到病前状态。
临床医生应了解这种病症，充分理解解剖结构，并建议纠正不适当的锻炼。
