Biomechanical changes of lower lumbar spine stress under different gaits by simulation analysis

doi:10.3969/j.issn.2095-4344.1335

Abstract

Abstract:

BACKGROUND: Clinical conservative treatment can easily lead to the recurrence of lumbar disc herniation. Backward walking is a popular rehabilitation exercise method for the treatment of lumbar disc herniation. After clinical guidance treatment, patients walk backwards and follow up statistics, confirming that walking backwards is an effective rehabilitation exercise therapy.

OBJECTIVE: Based on biomechanics, the significance of backward walking for lumbar rehabilitation was explored by finite element analysis.

METHODS: The three-dimensional model of lumbar spine was established based on CT images, and then the mechanical conditions of lumbar spine were simulated. The finite element method was used to examine the role of backward walking in the treatment of lumbar disc herniation from the mechanical point of view.

RESULTS AND CONCLUSION: (1) The displacement of L₁-L₂ intervertebral disc was only 1/2 of that of the gait, and the stress of the intervertebral disc was greatly reduced when walking backwards. (2) The stress of L₁-L₂ intervertebral disc during gait progression was 2.35 times as much as that during walking backwards. (3) Therefore, the changes of stress and displacement of lumbar spine and intervertebral disc are smaller than that of normal gait, which reduces the pressure on nucleus pulposus and helps the recovery of patients with lumbar disc herniation.

Key words: lumbar spine, lumbar disc herniation, finite element analysis, gait, backward walking, biomechanics, displacement, stress

CLC Number:

R459.9|R681.5|R318.01

Deng Jianquan, Chen Jinjun, Liang Hongsheng, Chen Xiaoyu. Biomechanical changes of lower lumbar spine stress under different gaits by simulation analysis[J]. Chinese Journal of Tissue Engineering Research, 2019, 23(28): 4541-4545.

Figures/Tables 2

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