患儿男,1岁10个月.因双下肢疼痛,不能行走二十多天,于1987年3月6日入院。患儿于入院前二十余天在平地行走时不慎跌倒,扶起后尚可照常行定.但两天后发现站、立、行、走均困难,触及下肢时啼哭不止.此后症状逐日加重,喜静卧不愿抱起,至入院时已完全无法活动。发病以来伴低热、厌食、精神倦怠。曾先后在外院及本院多次就诊,疑为“扭伤”、“骨折”,“关节炎”等,给以按摩及青霉素、消炎痛、强的松等多种药物治疗,均未奏效而入院。患儿系第二胎,足月顺产,母乳喂养,6个月起 Children, male, 1 year old and 10 months because of pain in the lower extremities, can not walk more than twenty days, in March 6, 1987 admission. Children in the flat 20 more than twenty days before the accidental careless fall, after the lift can still be set as usual, but two days later found standing, standing, walking and walking are difficult, when the lower limbs cry more than when the symptoms increased day by day , Hi still lying do not want to pick up, to the hospital has been completely unable to move. Since onset with fever, anorexia, mental fatigue. Has repeatedly in the outer court and our hospital for multiple visits, suspected “sprain”, “fracture”, “arthritis” and so on, to massage and penicillin, indomethacin, prednisone and other drug treatment, did not work and admitted . Children with a second child, term full-term, breastfeeding, 6 months