Biomechanical Characteristics of Different Types of Lumbar Disc Herniation Based on Finite Element Analysis
10.16156/j.1004-7220.2025.03.025
- VernacularTitle:基于有限元分析不同类型腰椎间盘突出症的生物力学特征
- Author:
Linling ZHANG
1
;
Huihao WANG
;
Zhongxiang YU
;
Min ZHANG
;
Yuxin ZHENG
;
Hongsheng ZHAN
Author Information
1. 上海中医药大学附属曙光医院石氏伤科医学中心,上海 201203;上海市中医药研究院骨伤科研究所,上海 201203
- Publication Type:Journal Article
- Keywords:
lumbar disc herniation(LDH);
lumbar vertebra;
intervertebral disc;
spinal cord;
finite element analysis;
biomechanics
- From:
Journal of Medical Biomechanics
2025;40(3):706-712
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the biomechanical characteristics of different types of lumbar disc herniation(LDH),and provide a theoretical basis for the clinical classification,diagnosis,and treatment of LDH.Methods A normal lumbar spine model with spinal nerves and four types of LDH models(central type,paracentral type/lateral recess type,intervertebral foramen type,extreme type)were constructed,and the biomechanical characteristics of the intervertebral discs and nerve roots in neutral posture and under six degrees of freedom conditions were analyzed.Results In neutral position,the stress of normal intervertebral disc was carger than that of the herniated intervertebral disc,and the stress ratio of annulus fibrosus and nucleus pulposus in normal model was greater than that of annulus fibrosus and nucleus pulposus in herniated models.In neutral position,the disc stress was mainly concentrated at the incisor between the protrusion and normal part,and recruitment occurred at outer edge of the disc.In flexion and extension position,the stress of the herniated intervertebral disc shifted to the right side.The maximum stress of herniated intervertebral disc appeared during right flexion,and the nerve root stress on the right side was carger than that on the left side.The stress of the herniated intervertebral disc during right rotation was slightly lower than that during right flexion,and the stress of nerve root on the right side was smaller than that on the left side.Conclusions The intervertebral disc is important in maintaining lumbar dynamic and static stability and flexibility.Different positions have an obvious effect the intervertebral disc stress.For patients with LDH,forward bending,flexion of the affected side and large extension should be avoided.Appropriate rotation of the affected side can help relieve the symptoms of nerve root compression.
