Methods Anatomy of articulatio atlantoepistrophia was reviewed and the causes and clinical manifestations were studied.The traction,fixation and exercise were used to treat 30 cases.

• 方法:结合环枢椎的解剖特点,总结分析30例小儿自发性环枢椎半脱位的诊断,采用牵引、外固定、功能锻炼综合治疗。