寰枢关节脱位的影像诊断

The imaging diagnosis of atlantoaxial joint dislocation

寰枢椎脱位是较为常见的上颈部创伤,若不及时诊断治疗常进行性加重,压迫颈髓危及生命。日常工作中常因对寰枢椎旋转脱位影像特征认识不足而导致误诊、漏诊,延误治疗。鉴于此,从齿突距寰椎两侧块间距(寰齿间距),双寰椎侧块冠状面形态、大小,双侧寰枢椎侧块间隙,双侧侧块上下关节面关系及齿突距寰椎前结节间距(寰齿前间隙)等5方面分析寰枢椎相对关系,准确认识寰枢椎正常中立静止状态、相对水平移动、正常旋转时X线及CT表现,以及寰枢椎各类型脱位时X线及CT特征,提高诊断准确率。

Atlantoaxial dislocation is more common in the upper neck trauma, failed to timely diagnosis and treat-ment often progression, oppressive cervical spinal life-threatening. Daily work, common due to insufficient understanding of imaging findings of atlantoaxial rotatory subluxation and lead to misdiagnosis and missed diagnosis, delay treatment. In view of this, accurate understanding of X-ray and CT manifestations, on five points of lateral atlantodental space , bilateral lateral shape and size in coranary plane, bilateral atlantoaxial lateral space, bilateral lateral joint relations, and atlanto-den-tal interval, of the normal atlantoaxial vertebral neutral position, relative parallel translation and the normal rotation, the atlantoaxial dislocation in various types,help to improve the diagnostic accuracy.