CT image-based establishment and verification of three-dimensional finite element biomechanical model for osteoporotic thoracolumbar compression fracture after percutaneous kyphoplasty(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第3期
- Page:
- 360-369
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- CT image-based establishment and verification of three-dimensional finite element biomechanical model for osteoporotic thoracolumbar compression fracture after percutaneous kyphoplasty
- Author(s):
- QUAN Zhen1; ZHANG Xiaogang1; 2; QIN Daping1; 2; SONG Min1; 2; ZHANG Hua2; ZHANG Hongwei2; ZHAO Xiyun2; WANG Zhipeng2; MA Tao1; CHEN Bo1
- 1. Clinical College of Traditional Chinese Medicine, Gansu University of Chinese Medicine, Lanzhou 730000, China 2. Department of Spinal Surgery, Affiliated Hospital of Gansu University of Chinese Medicine, Lanzhou 730020, China
- Keywords:
- Keywords: osteoporotic thoracolumbar compression fracture three-dimensional finite element biomechanical model establishment and verification
- PACS:
- R318
- DOI:
- DOI:10.3969/j.issn.1005-202X.2021.03.018
- Abstract:
- Abstract: Objective To establish a three-dimensional finite element model of thoracolumbar spine (T11-L2) and to verify its validity in biomechanical analysis. Methods A volunteer with osteoporotic compression fracture of T12 vertebral body was selected as the modeling object, and 64-slice spiral CT was used for continuous scan, with the thoracolumbar spine T11-L2 as the scanning area. The CT data in DICOM format were imported into Mimics 19.0 software for extracting and transforming the original model. Moreover, Geomagic Warp 2017 software was used for feature removal, smoothing, curved surface entity fitting Solidworks 2017 software for parts assembly and subsidiary structure generation and Ansys Workbench 17.0 software for the additions of material properties and boundary conditions, coordinate and load setting, and biomechanical analysis. Results A three-dimensional finite element model of the compression fracture segment (T11-L2) of T12 vertebral body was successfully established, and the angular displacements of the anterior flexion, posterior extension, left flexion, right flexion, left rotation and right rotation were measured as 8.3°, 3.8°, 7.8°, 7.6°, 3.7° and 4.0°, respectively, which were consistent with the displacement trend verified by previous mechanical experiments. Conclusion The finite element digital model of osteoporotic vertebral compression fracture after percutaneous kyphoplasty can be successfully established based on the finite element modeling software. The established model is proved to be qualified in validity verification and reliable, with biomechanical performances.
Last Update: 2021-03-30