NDLI: Establishment and verification of a non-linear finite element model for human L4

Content Provider	IEEE Xplore Digital Library
Author	Zhitao Xiao Liya Wang He Gong Jiazi Gao Xizheng Zhang
Copyright Year	2010
Description	Author affiliation: Institute of Medical Equipment, The Academy of Military Medical Sciences, Tianjin, CHINA (Xizheng Zhang) \|\| Department of Engineering Mechanics, Jilin University, Changchun, CHINA (Zhitao Xiao; Liya Wang; He Gong; Jiazi Gao)
Abstract	Object: To establish a non-linear finite element (FE) model for human L4–L5 lumbar segment and verify its reliability. Method: A FE model of human L4–L5 lumbar segment was established. Some empirical expressions were used to simulate the mechanical properties of vertebral body. The annulus fibrosus and nucleus were assigned hyper-elastic material. The surrounding ligaments were assigned be unsymmetric spring elements. The FE model was developed in ABAQUS software under the loading conditions of axial compression, lateral bending, extension, torsion, and flexion. Result: The result curves of different loading conditions all represent a similar nonlinear curve. The axial force and displacement curve of L4–L5 FE model was closely correlated with the published results of in vitro experimental study. The relationship between moment and degrees also showed a good agreement with the experimentally determined in vitro data during the loading condition of lateral bending, extension, torsion, and flexion. Conclusion: The FE model established in this paper can effectively reflect the actual mechanical properties of human L4–L5 lumbar spine. It can be used as the basis for further research on lumbar degenerative diseases and related treatments.
Starting Page	1171
Ending Page	1175
File Size	549581
Page Count	5
File Format	PDF
ISBN	9781424464951
e-ISBN	9781424464982
DOI	10.1109/BMEI.2010.5639592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Loading Spine Humans lumbar spine Finite element methods finite element analysis Ligaments In vitro Load modeling non-linear
Content Type	Text
Resource Type	Article

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