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《Journal of Biomedical Engineering》 2015-01
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Biomechanical Study of Lumbar Spine Under Different Vibration Conditions

XIANG Pin;DU Chengfei;MO Zhongjun;GONG He;WANG Lizhen;FAN Yubo;Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education,School of Biological Science and Medical Engineering,Beihang University;National Research Center for Rehabilitation Technical Aids;  
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 3Dgeometrical 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.
【Fund】: 国家自然科学基金资助项目(11120101001 11202017 11322223);; 教育部博士点基金资助项目(20121102120039 20131102130004);; 高等学校学科创新引智计划项目资助(B13003);; 国家科技支撑计划项目资助(2012BAI18B05 2012BAI18B07);; 北星摆颤一体脊柱梳理健身仪生物力学分析项目
【CateGory Index】: R580
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