问:我的儿子4岁了,从幼儿园回到家,右胳膊一直半弯着悬贴在胸前,问他怎么了,他说是洗手后想把手上的水甩干甩痛的。到医院诊断为“牵拉肘”。以前两次都是因为牵拉孩子的胳膊时发生了牵拉肘,这次没人牵拉,怎么也患“牵拉肘”呢?(北京张兰) 答:牵拉肘是医生们为“桡骨头半脱位”所取的 Q: My son, who is 4 years old, got home from kindergarten. He had his right arm bent over his chest and asked him what was going wrong. He said he was trying to wash his hands and washes the water after he started washing it. To the hospital diagnosed as “pulling the elbow.” Previously both because pulling the child’s arm occurred pulling the elbow, no one pull, how are suffering from “pulling the elbow”? (Beijing Zhang Lan) A: pull the elbow is the doctors For the “radial head subluxation ” taken