患儿 ,男 ,9岁 ,左前臂跌落伤 9小时入院。腕部呈银叉样畸形。查体 :右肘部及前臂与腕部肿胀明显。肘部呈半屈曲畸形 ,腕肘部及前臂可触及骨擦音。桡骨小头窝消失。Ｘ线片示 ,上尺桡关节分离 ,桡骨小头向外前方移位 ,尺骨上段粉碎性骨折。桡骨远端向背外侧明显移位。尺骨远段向 Children, male, 9 years old, left forearm fall injury 9 hours admission. Wrist was silver fork-like deformity. Physical examination: right elbow and forearm and wrist swelling significantly. Elbow flexion deformity, wrist elbow and forearm can touch the bone fricative. Radial head disappears. X-ray showed on the distal radioulnar joint radial head shift outward, the upper ulna comminuted fracture. Distal radius to the dorsal lateral obvious shift. Olecranon far segment