例1,患儿,女,半岁,1994年7月住院。足月剖腹产,出生后四肢活动自如,无外伤。15天后不明原因哭闹,左上肢活动受限,肩部肿胀。父母疑为左肩关节脱位。门诊 X 线拍片发现左锁骨全骨被新骨包绕。初诊为左锁骨骨折,骨痂形成。当时未作特殊处理。半月后患儿烦躁不安,哭闹。并有低中度发热。左肩 Example 1, children, women, six months old, hospitalized in July 1994. Full-term caesarean section, postnatal limbs freely, no trauma. 15 days crying for unknown reasons, left upper limb activity limited, shoulder swelling. Parents suspected left shoulder joint dislocation. Out-patient X-ray film found that the left collarbone bone is surrounded by new bone. Newly diagnosed as left clavicle fracture, callus formation. At that time, no special treatment was made. Half a month after the children irritability, crying. And low to moderate fever. Left shoulder