Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (30): 5511-5515.doi: 10.3969/j.issn.2095-4344.2012.30.001

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Finite element modeling construction of human lumbosacral vertebrae based on CT data

Zhu Li-xin1, Wang Jian1, Cao Yan-lin1, Fan Wang-ju1, Yu Guo-ji2, Zhang Xi-bing1, Ye Wen-ming1   

  1. 1Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, Guangdong Province, China;
    2School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
  • Received:2012-02-23 Revised:2012-04-10 Online:2012-07-22 Published:2012-07-22
  • Contact: Wang Jian, Master, Physician, Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, Guangdong Province, China wjian8723@163.com
  • About author:Zhu Li-xin☆, Doctor, Associate professor, Associate chief physician, Master’s supervisor, Department of Orthopedics, Zhujiang Hospital of Southern Medical University, Guangzhou 510282, Guangdong Province, China

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Abstract:

BACKGROUND: Now, the establishment of the finite element model is mainly based on the medical image modeling, which can directly reflect the real geometry of the lumbar spine.
OBJECTIVE: To establish the three-dimensional finite element model of L1-S5 segment lumbosacral vertebrae based on the CT image data and image processing software.
METHODS: A healthy male volunteer was selected; the data of spiral CT scan images of 0.625 mm thickness were imported into the Mimics10.01 software in Dicom format, then the lumbosacral vertebrae three-dimensional geometric mesh model was obtained after three-dimensional treatment. Finally, the three-dimensional finite element model of normal human lumbosacral vertebrae was established by Geomagic studio 12.0, HyperMesh 10.0 and Abaqus10.1 software.
RESULTS AND CONCLUSION: Accurate human lumbosacral vertebrae three-dimensional finite element model was established successfully and validated. With the accurate CT scan data, it was efficient and effective to complete the construction of the finite element model of spine by software for image processing. Compared with a single segment mode, the multi-segment model could easily investigate the effect of clinical disease and surgical fixation on the health of spine, which makes up the shortcomings of currently single motion segment model.

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