全腰椎非线性有限元模型的建立与有效性验证

doi:10.13418/j.issn.1001-165x.2018.06.013

Abstract

Abstract:

Objective 　To develop the whole lumbar spine finite element model and to validate the model by comparison with the previous vitro experiments. results.　Methods　The CT images of the whole lumbar spine were from a 25 years old male volunteer. The finite element model was established by six software: Mimics 17.0, Geomagic Studio 2013, UG8.5, Hypermesh 13.0 and Abaqus 6.14-4. After finishing a grid convergence test, six lumbar movements (flexion, extension, left bending, right bending, left axial rotation, right axial rotation) were simulated by applying different moment loads to the model. Then the range of motion (ROM) of each lumbar spine functional spinal unit (FSU) was recorded.　Results　The simulating results obtained by the model were similar to those obtained from the in-vitro experiments, and the trend of the two was consistent.　Conclusions　The establishment and validation of the nonlinear finite element model of the whole lumbar spine used in this study can be used to model and analyze future spine-related diseases.

Key words: Lumbar spine, 　Biomechanics, 　Finite element analysis, 　Nonlinear Model

LING Qin-jie, LIN Hu, XIE Pu-sheng, DENG Yu-ping, HUANG Wen-hua. Development and validation of nonlinear finite element model of the whole lumbar spine[J]. Chinese Journal Of Clinical Anatomy, 2018, 36(6): 662-667.

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Development and validation of nonlinear finite element model of the whole lumbar spine

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