• 1. Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China;
  • 2. National Research Center for Rehabilitation Technical Aids, Beijing 100176, China;
WANGLizhen, Email: lizhenwang@buaa.edu.cn
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We observed the effect of vibration parameters on lumbar spine under different vibration conditions using finite element analysis method in our laboratory. In this study, the CT-images of L1-L5 segments were obtained. All images were used to develop 3D geometrical model using the Mimics10.01 (Materialise, Belgium). Then it was modified using Geomagic Studio12.0 (Raindrop Geomagic Inc. USA). Finite element (FE) mesh model was generated by Hypermesh11.0 (Altair Engineering, Inc. USA) and Abaqus. Abaqus was used to calculate the stress distribution of L1-L5 under different vibration conditions. It was found that in a vibration cycle, tensile stress was occurred on lumbar vertebra mainly. Stress distributed evenly and stress concentration occurred on the left rear side of the upper endplate. The stress had no obvious changes under different frequencies, but the stress was higher when amplitude was greater. In conclusion, frequency and amplitude parameters have little effect on the stress distribution in vertebra. The stress magnitude is positively correlated with the amplitude.

Citation: XIANGPin, DUChengfei, MOZhongjun, GONGHe, WANGLizhen, FANYubo. Biomechanical Study of Lumbar Spine Under Different Vibration Conditions. Journal of Biomedical Engineering, 2015, 32(1): 48-54. doi: 10.7507/1001-5515.20150009 Copy

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