患者,男,32岁。因双下肢无力,间歇性跛行半年余,加重一个月于1989年8月27日入院。自89年2月起,常因双下肢无力,被路上小石块绊倒。双手持重物行走时,症状更为明显,自觉双腿发沉、无力即摔例。7月后,病情加重,在平坦路上行走时间稍长,便出现跛行,尤以右腿更重,并摔倒4次。但体息后症状好转,可继续行走。发病以来肌肉轻度酸疼,无肢体麻木,身上有不定处肉跳。无大小便障碍及出汗异常。曾去几个医院就诊未明诊断,以“双下肢无力待查”入院。既往体健。无烟酒嗜好,家族中无类似病史。入院查体:Bp16./10.7kPa(120/80mmHg),神清,发育营养良好。心肺检查无异常。双眼视力1.0, Patient, male, 32 years old. Due to weakness of both lower extremities, intermittent claudication more than six months, increased one month on August 27, 1989 admission. Since February 89, often due to weakness of both lower extremities, tripped by small stones on the road. When walking with a heavy object, the symptoms are more obvious, conscious legs are heavy, and the weakness is a fall. After July, his condition deteriorated and he walked on a flat road for a little longer and he became limp, especially with his right leg heavier and falling 4 times. However, the symptoms improved after interest, can continue to walk. Since the onset of mild muscle aches, no limb numbness, who have uncertain place to go. No incontinence and sweating abnormalities. Have to go to several hospitals for treatment of unknown diagnosis, “double leg weakness to be checked” admission. Past physical health. Smoke-free wine hobby, no similar family history. Admission examination: Bp16./10.7kPa (120 / 80mmHg), God clear, good nutrition and development. No abnormal heart and lung examination. Binocular vision 1.0,