结论：术中必须纠正桡骨远端短缩及桡侧偏斜畸形、下尺桡关节脱位和恢复掌倾角；
Conclusion Madelung deformity , distal radioulnar joint dislocation and the change in palm angles of inclination must be rectified.
方法：2008年至2009年治疗2例桡骨头骨折合并下尺桡关节脱位患者，均为男性，年龄分别为56岁、66岁。
Methods: From 2008 to 2009, 2 male patients of radius head fractures complicating distal radioulnar joint dislocation were treated, the age was 56 and 66 years old respectively.
有2(1.4%)例患患者发生慢性下尺桡关节不稳。
Chronic instability of the distal radioulnar joint occurred in two wrists (1.4%).
肘外翻畸形，肘关节慢性不稳定，桡骨干上移和下尺桡关节脱位是主要并发症。
In order to find out the causes of these complications, the biomechanical experiment was made on 20 specimens of fresh upper limbs.
肘外翻畸形，肘关节慢性不稳定，桡骨干上移和下尺桡关节脱位是主要并发症。
In order to find out the causes of these complications, the biomechanical experiment was made on 20 specimens of fresh upper limbs.
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