Duryea Dennis M, Payatakes Alexander H, Mosher Timothy J
Department of Radiology, H066, Milton S. Hershey Medical Center, 500 University Drive, P.O. Box 850, Hershey, PA, 17033, USA.
Bone and Joint Institute, Milton S. Hershey Medical Center, 30 Hope Drive, Hershey, PA, 17033, USA.
Skeletal Radiol. 2016 Sep;45(9):1243-7. doi: 10.1007/s00256-016-2411-x. Epub 2016 May 26.
Distal radioulnar dislocations typically occur in association with fractures of the distal radius and/or ulna. Rare isolated dislocations or subluxations are more difficult to diagnose and are initially missed in up to 50 % of cases. We present two cases of missed isolated volar rotatory dislocation of the distal radioulnar joint. Subtle, overlooked radiographic findings of abnormal radioulnar alignment and ulnar styloid projection are highlighted. The supplemental role of cross-sectional imaging is reviewed. Adequate clinical information, appropriate radiographic technique, and high index of suspicion are necessary for the accurate and timely diagnosis of this rare injury pattern.
桡尺远侧关节脱位通常与桡骨和/或尺骨远端骨折同时发生。罕见的单纯脱位或半脱位更难诊断，最初在高达50%的病例中会被漏诊。我们报告两例漏诊的桡尺远侧关节单纯掌侧旋转脱位病例。强调了桡尺排列异常和尺骨茎突投影等细微、易被忽视的影像学表现。回顾了横断面成像的辅助作用。准确及时诊断这种罕见损伤模式需要充分的临床信息、恰当的影像学技术及高度的怀疑指数。
