Mechanism of the low-frequency vibration generated by vehicle driving effects on the human lumbar spine: a dynamic simulation analysis

doi:10.3969/j.issn.2095-4344.1011

Abstract

Abstract:

BACKGROUND: Chronically exposing to the low-frequency vibration environment generated by vehicle driving will impair human lumbar spine. However, littler is reported on the underlying mechanism of the low-frequency vibration effects on the human lumbar mechanical properties.

OBJECTIVE: To investigate the mechanism of different vibration frequencies effects on the human lumbar spine through dynamic finite element analysis.

METHODS: A poroelastic finite element model of human L₂-L₃ was established to perform time-dependent dynamic simulation analysis. The effects of different vibration frequencies generated by normal driving of the vehicle on the human lumbar mechanical properties were investigated.

RESULTS AND CONCLUSION: (1) The static load caused less stress and displacement values than the dynamic load at the same vibrational time. (2) With the vibration frequency increasing, the axial effective stress and radial displacement in the intervertebral disc were increased, whereas the pore pressure in the nucleus pulposus was decreased. (3) When the vibration frequency reached a certain degree, the numerical fluctuation magnitude of the lumbar mechanical parameters was not changed continuously with increasing vibration frequency. (4) These results indicate that the rapid increase in the stress and displacement and dissipation in the pore pressure are not conducive to the bearing and performance recovery of human lumbar spine. Therefore, static load causes slight influence on spinal mechanical properties. Vibration at the resonant frequency generates the most serious injury to the human lumbar spine. Relatively high vibration frequency generated by the vehicle driving is more detrimental to the lumbar spine health within a certain frequency range.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Lumbar Vertebrae, Finite Element Analysis, Vibration, Tissue Engineering

CLC Number:

R318

Fan Ruoxun, Liu Jie, Liu Jun, Gao Jiazi. Mechanism of the low-frequency vibration generated by vehicle driving effects on the human lumbar spine: a dynamic simulation analysis [J]. Chinese Journal of Tissue Engineering Research, 2018, 22(35): 5648-5654.

Figures/Tables 5

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