The rules of atlanto-axialjoint movement which are observed in the present study lay theoretical basis for diagnosing and treating atlanto-axial subluxation.
观察到的功能位寰枢关节变化规律，为诊断及治疗寰枢关节不全脱位提供了理论依据。
2
The lateral atlantoaxial joint surface is tilted in the sagittal plane or occipito-atlanto-axial joints are asymmetric. Each of the case may result in atlantoaxial dislocation.