You are viewing a javascript disabled version of the site. Please enable Javascript for this site to function properly.
Go to headerGo to navigationGo to searchGo to contentsGo to footer
In content section. Select this link to jump to navigation

FE modeling and analysis of L4-L5 lumbar segment under physiological loadings

Issue title: Papers from the 3rd International Conference on Biomedical Engineering and Technology (iCBEB 2014), 25–28 September 2014, Beijing, China

Subtitle:

Guest editors: Edward J. Ciaccio

Article type: Research Article

Authors: Yu, Bin* | Zhang, Chen | Qin, Chunyu | Yuan, Huaijiang

Affiliations: School of Computer Science and Technology Xidian University, Xi'an, Shaanxi, China

Correspondence: [*] Corresponding author: Bin Yu, School of Computer Science and Technology Xidian University, Xi'an, Shaanxi, China. E-mail:yubin@mail.xidian.edu.cn

Keywords: Lumbar spine, motion, stress/strain, physiological loadings

DOI: 10.3233/THC-150975

Journal: Technology and Health Care, vol. 23, no. s2, pp. S383-S396, 2015

Published: 2015
Get PDF open access

Abstract

BACKGROUND: Because of the complexity and construction, the failure rate of lumbar surgery is still high. It is necessary to find a solution to help improve the accuracy and safety of surgery.

OBJECTIVE: Construction and stress analysis of lumbar spine.

METHODS: The generated FE model based on CT scan images was validated and used to investigate the motion, and stress/strain of the vertebrae under different physiological loadings. A degenerated model was also simulated by changing the materials properties (E and Poisson's Ratio) of the intervertebral disc nucleus and annulus fibers from 1.0 N/mm^2 to 3.0 N/mm^2, and 0.42 to 0.45, respectively.

RESULTS: When annulus fibrosis is degenerating or under ictal external loadings, the annulus fibrosis will be in a state of protrusion and there will potential for other pathological changes, such as herniation of the nucleus pulpous.

CONCLUSION: The effects of these changes in the corresponding motion and stress/strain of the spinal motion segments were investigated with some conclusions drawn in relation to the normal model for future application of medical diagnosis and surgical treatment.

Show more