Establishment of a three-dimensional finite element model of basilar invagination and occipitalization of atlas on HyperMesh
LIANG Tao
MENG Chun-ling
YIN Yi-heng
LIU Guang-wei
YU Xin-guang
Abstract：Objective To explore how to establish a three-dimensional finite element model of basilar invagination and occipitalization of atlas. Methods The CT data of craniovertebral junction in a typical patient with basilar invagination and occipitalization of atlas was collected. Mimics software was used to edit CT pictures and generate the three-dimensional geometric model of atlanto-occipital fusion corpus and axis surface. Then point cloud was exported. Reverse engineering software of Imageware was used to process point cloud data and generate three-dimensional curved surface. The surface model was blocked first and then meshed by Hypermesh software. The mesh model was finally exported by the method of mix-meshing in tetrahedrons and hexahedrons. The mesh model was imported into finite element software of Abaqus. Finite element model was established by adding ligaments, assigning material, defining contact and defining boundary. Results The finite element model of basilar invagination and occipitalization of atlas contained 474,162 elements and 235,524 notes with good geometric similarity. Conclusion The three-dimensional finite element model of basilar invagination and occipitalization of atlas provides the basis for the research on craniovertebral junction malformation, and it can be used for reference of establishment of finite element model in upper cervical spine malformation.
Keywords：Basilar invaginationOccipitalization of AtlasFinite element analysisModelHypermesh
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 155-157,160 )