寰枢椎脱位临床病例分析（附103例报告）

Atlantoaxial Dislocation:A Report of 103Cases

１０３例寰枢椎脱位中，７４例有发育性畸形和疾病性骨结构异常，单纯外伤性脱位２９例。影像学诊断以寰椎前弓与齿突间距（ＡＤＩ）、齿突前倾角和不稳定系数为标准，对不同的手术方式予以分析。

AbstractHundred and three Cases of atlantoaxial dislo-cation were reviewed.In 74 cases with develop-ment defofmity,and structural abnormality of thecervical spine,atlantoaxial dislocation occurredwith a slight trauma giving various clinical symp-toms. 29 cases were simply traumatitc. Most ofthe cases resulted from flexion iniury, while asmall number of cases were caused by extensioninjury,where fracture of the odontoid process ofthe axis occurred easier than during flexion injury.The diagnosis standard was set up according to thedata obtained with irnaging diagnosis,atlas-densinterval (ADI), anteversion angle of the odontoidprocess and the unstable coefficient.The opera-tion methods were selected according to the typesof slocation. The mortality was closely relatedto the degree of pre-operative respiration inhibi-tion.