1病例患儿,男,3月,“因竖抱时头和下肢后弯,躯干向前成弓形”来院儿科门诊。患儿系第二胎第一产,孕42w在市级医院头位阴道自然分娩,出生体重4100g,身高51cm,头围35cm,生后即发现右上肢肢体短缩畸形。3个月竖抱时,家长发现患儿常常出现头和下肢后弯,躯干向前形成弓形的异常姿势。患儿无新生儿黄疸,无产伤窒息史。查体:体重6.5kg,身高64cm,头围40cm。左手正常, 1 case of children, male, in March, “because the vertical hold the lower end of the bend and the back, the trunk forward into a bow ” to the hospital pediatric clinic. Pediatric second child first birth, pregnant 42w in the municipal hospital head vaginal natural childbirth, birth weight 4100g, height 51cm, head circumference 35cm, after birth that the right upper limb limb shortening deformity. 3 months vertical hold, parents found that children often appear after the bend in the head and lower limbs, the trunk formed an anterior bow abnormal posture. No neonatal jaundice in children, no history of asphyxia. Physical examination: body weight 6.5kg, height 64cm, head circumference 40cm. Left normal,