儿童寰枢椎半脱位的X线影像学改变及其临床价值

目的探讨儿童寰枢椎半脱位的X线影像学表现及其临床价值。方法结合环枢椎的解剖特点，回顾分析48例儿童寰枢椎半脱位的颈椎X线平片影像学改变。结果齿状突前间隙宽度有不同程度增宽、侧间隙差值增大可伴有侧块、齿突侧块间隙不对称等X线影像学改变。结论颈椎侧位及张口位X片测定齿突前间隙、侧间隙、两侧块椎间隙差值能提高确诊率，并指导临床治疗和估计预后。

The value and X-ray imaging findings with atlantoaxial subluxation in child

Objective To discuss the value and imaging findings with atlantoaxial subluxation in child.Methods Anatomy of articulatio atlantoepistrophia was reviewed and the causes and clinical manifestations were studied.The x-ray film of imaging representations of 48 cases with Atlantoaxial Subluxation in Child were retrospectively analysed.Results Imaging findings with front clearance odontoid process of cervical vertebra have different extent increase width or flank clearance difference value enhance or lateral atlanto-dental space asymmetry.Conclusions Survey imaging difference with front clearance odontoid process of cervical vertebra and flank clearance and lateral atlanto-dental space at flank view and open-mouth view of cervical vertebra.It is may improve the accurate diagnosis rate and hdpful to clinical treatment and and estimation of prognosis.