儿童肱骨内上髁撕脱骨折很常见,但出现关节交锁的概率很低,笔者于2010年12月收治肱骨内上髁撕脱骨折误诊为肱骨滑车骨折1例。报告如下。1病例报告患儿,男,12岁,因摔伤致左肘部肿胀明显,触痛,肘关节伸屈活动受限而求诊,摄X线片发现关节水平隐约见类圆形高密度影,CT检查肱骨滑车前面毛糙,可疑肱骨滑车骨块。门诊给予石膏屈肘90°固定,2周后肿胀消退,肘关节出现交锁,伸 Fracture of the humerus epicondyle avulsion is common in children, but the probability of occurrence of joint locking is very low, the author in December 2010 admitted to the humeral epicondyle avulsion fracture misdiagnosed as humeral block fracture in 1 case. The report is as follows. 1 case report Children, male, 12 years old, due to fall caused by obvious swelling of the left elbow, tenderness, elbow flexion and extension of activity limited consultation, the X-ray film found that the joint level vaguely see the class of round high density In front of the humeral pulley, the CT examination was rough with suspected humeral trochlear bone. Outpatient plaster elbow 90 ° fixed, 2 weeks after the swelling subsided, the elbow appear interlocking, stretching