1　病历简介患者,男,50岁。因左上臂酸痛1个月伴活动受限2ｈ入院。体检:腹平软,肝脾肋下未触及。全腹未触及包块。未叩出移动性浊音,肠鸣音活跃。左上臂肿胀畸形,有叩击痛及异常活动并有骨摩擦感,诊断为左肱骨骨折。实验室检查:血常规、血液生化检查未发现异常。Ｘ线片示:左肱 1 medical history patient, male, 50 years old. Due to left upper arm pain for 1 month with restricted activities for 2h admission. Physical examination: The abdomen was soft and the liver and spleen were not touched under the ribs. The entire abdomen did not touch the mass. No voiced dullness was heard and bowel sounds were active. The upper left arm was swollen and malformed. There was percussive pain and abnormal movement and there was a feeling of bone friction. A diagnosis of a left tibia fracture was made. Laboratory tests: No abnormalities were found in routine blood tests and blood biochemical tests. X-ray film shows: left