下尺桡关节的功能是稳定桡骨在尺骨远端的旋转。其稳定性由下尺桡掌侧韧带、下尺桡背侧韧带及三角纤维软骨盘维持。当有直接或间接暴力所致下尺桡掌、背侧韧带断裂或伴有三角纤维软骨断裂，从而使尺骨突向背侧或掌侧脱位。下尺桡关节脱位除可与Colles骨折、Smith骨折及Galazzi骨折伴发外，亦有不少病例为单发者。下尺桡关节脱位对临床经验不足的医生常易漏诊。
...下尺桡关节脱位；治疗 [gap=865]Key words】 emergency medical treatment; Barton fracture; dislocation of distal radioulnar joint; treatment ...
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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.
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.
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