患者,男性,23岁、工人,一个月前在工作中不慎扭伤左肩部,未经治疗。休息两周后,自觉肩部疼痛明显减轻。后又因工作劳累,逐渐感左肩不适加重,并出现左上肢乏力及轻度的麻木蚁走感。查体:左上肢及手无肌萎缩,左肩肘伸屈有力,手运动正常。前臂尺侧及手的掌背尺侧痛沉略减退,左尺骨膜反射未引出。初步诊断为臂丛神经(下臂丛)轻度损伤。给予口服维生索B_1、B_6及针灸理疗。治疗3周症状无缓解。给摄颈肩部平片,见双侧颈肋,左侧过长。此时再详细问病史,自述一年前时有左肩不适,左上肢轻度乏力和麻木感,左桡动脉搏动较弱,但未介意,此例 Patient, male, 23 years old, worker, accidentally sprained left shoulder at work one month ago, untreated. After two weeks of rest, conscious shoulder pain was significantly reduced. Later because of work fatigue, gradually feel the left shoulder discomfort aggravating, and left upper limb fatigue and mild numbness ants feeling. Physical examination: Left upper limb and hand muscle atrophy, flexion and extension of the left elbow, hand movement is normal. Forearm ulnar and palmar palmar ulcer pain decreased slightly, left ulna periosteal reflex did not lead. Initial diagnosis of brachial plexus (lower brachial plexus) mild injury. Give oral vitamin B_1, B_6 and acupuncture therapy. No symptoms for 3 weeks after treatment. Photograph neck and shoulder plain film, see bilateral cervical ribs, the left is too long. At this point in detail about the medical history, a year ago when there was a left shoulder discomfort, left upper extremity mild fatigue and numbness, pulsatile left ventricular artery pulse, but did not mind, this case