Biomechanical Simulation of Artificial Lumbar Intervertebral Disc Replacement and Intervertebral Fusion

被引:0
作者
Liu C. [1 ]
Liu Q. [2 ]
Yan Y.-H. [1 ]
机构
[1] School of Mechanical Engineering & Automation, Northeastern University, Shenyang
[2] Shengjing Hospital, China Medical University, Shenyang
来源
Dongbei Daxue Xuebao/Journal of Northeastern University | 2019年 / 40卷 / 10期
关键词
Artificial lumbar disc replacement; Biomechanics; Degeneration; Finite element; Intervertebral fusion;
D O I
10.12068/j.issn.1005-3026.2019.10.026
中图分类号
学科分类号
摘要
The finite element method was used to evaluate the biomechanical effects of artificial lumbar intervertebral disc replacement and intervertebral fusion. Based on the CT image data, a finite element model of lumbar segments L2~L5 was established, and two kinds of surgical models of artificial lumbar disc replacement and intervertebral fusion were established. The simulated physiological load was applied to the finite element model, and the intervertebral activity and facet joint stress of each segment of the two surgical models were calculated. The simulation results showed that artificial lumbar disc replacement has a significant motion preservation in the surgical segment compared with intervertebral fusion, but the range of motion(ROM)were 40.9% and 43.1% higher than that of the normal lumbar in extension and lateral bending, which may cause mild instability of the surgical segment. Artificial disc replacement improves the stress state of the small joints of the upper and lower adjacent segments, but the replacement segment will induce higher contact pressure of the small joints under torsional conditions. © 2019, Editorial Department of Journal of Northeastern University. All right reserved.
引用
收藏
页码:1517 / 1520
页数:3
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