Objectives To investigate the mechanical properties of bilateral atlantoaxial transarticular screws and atlas laminar hooks instrumentation with finite element method.

• 两种内固定方式均能达到良好的三维固定效果,双侧经寰枢关节螺钉及寰椎椎板钩系统中经关节螺钉承担应力小,发生离断几率低。