• Jiaju Zhu, Guodong Ma, Meixue Ren, Dan Wu
  • School of Physical Education,Northeast Normal University,Changchun, 130024,China.
  • Email: zhujj@nenu.edu.cn.
  • Human Movement Science College, Jilin Sport University, Changchun, 130022, China.
  • Email: 13843281097@163.com.
  • Graduate school,Jilin Institute of Physical Education,Changchun,130022, China.
  • Email: wd20090101@163.com.
  • Osteoporosis department,Henan Provincial Orthopaedic Hospital, Luoyang, 450000,China.
  • Email: 13843281097@163.com.


Objective: The objective of this investigation is to assess the material qualities of lumbar vertebrae and their influence on biomechanical characteristics. Methodology: The study examined four distinct sets of material qualities, which were characterised by different values of Young's modulus and Poisson's ratio for both trabecular and cortical bone. The analysis focused on examining the impact of different material property sets on stress distribution, displacement, and strain patterns. In order to substantiate the results, a three-dimensional model of the lumbar vertebrae was generated utilising computed tomography (CT) data and subsequently submitted to finite element analysis. Results: The findings of the study are as follows: The findings of the study indicated that there were discernible variations in stress distributions across different material property sets. Specifically, it was consistently observed that areas 2 and 3 displayed elevated stress values compared to other regions. The study observed a decrease in maximum displacement as the material features were stiffer. Specifically, Set 4 exhibited the lowest displacement while Set 1 exhibited the most. While there were certain changes in strain patterns among different material property sets, these variations were not as substantial when compared to the distributions of stress and displacement. The investigation underscored the notable impact of material attributes on the biomechanical characteristics of lumbar vertebrae. Increased material strength led to elevated stress concentrations and decreased displacements. The findings also demonstrated that there was no stress observed in any of the vertebrae. However, it was observed that Set 2 had the highest pressure value. Comprehending the impact of material qualities on the biomechanics of lumbar vertebrae is of paramount importance in the development of efficacious interventions and preventative strategies for disorders pertaining to the spine. Conclusion: In conclusion, the Young's modulus and Poisson's ratio were found to be significant factors in determining stress concentration and displacement. Specifically, lower values of Poisson's ratio and Young's modulus were observed to correspond to increased stress concentration and decreased displacement.


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