Establishment of normal lumbar and osteoporosis three-dimensional finite element models

doi:10.3969/j.issn.2095-4344.2013.09.001

Abstract

Abstract:

BACKGROUND: Establishment of a realistic finite element model is the important basis for the finite element mechanics analysis of the spine. The reports on the finite element model of osteoporosis are less.
OBJECTIVE: To establish the main composition of the normal lumbar spine and osteoporosis lumbar vertebrae finite element digital model in order to lay the foundation for the finite element analysis of the normal lumbar spine and lumbar vertebrae of osteoporosis patients.
METHODS: One healthy male volunteer received the spiral CT scan on the lumbar spine, then the pictures were separated and reconstructed in Mimics, optimized in Geomagic, assigned material and meshed in Ansys, and finally the three-dimensional finite element digital model was established.
RESULTS AND CONCLUSION: The three-dimensional finite element digital models were established, including the lumbar spine, the intervertebral disc and the main ligament of normal and osteoporotic lumbar spine. This model was living with appearance, perfect with similarity. It could revolve arbitrary, so that the researchers could observe and collect the three-dimensional information from multiple perspectives, and the main structural and material properties were closed to the actual properties, which is suitable for biomechanical study. The CT data which is software (mimics, were geomagic and Ansys) can used to establish the normal lumbar spine and osteoporosis finite element digital models.

Key words: bone and joint implants, artificial prosthesis, spine, lumbar, three-dimensional reconstruction, finite element, digital model, osteoporosis, computed tomography, digitization, medical imaging, biomechanics, provincial grants-supported paper, photographs-containing paper of bone and joint implants

CLC Number:

R318

Li Wei1, Zhang Hong, Cao Li-jun, Ren Guo-shan, Yan Zhan-ping, Zhao Chang-yi, Gao Zeng-min. Establishment of normal lumbar and osteoporosis three-dimensional finite element models[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(9): 1521-1526.

Figures/Tables 6

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