Chinese Journal of Tissue Engineering Research ›› 2012, Vol. 16 ›› Issue (4): 593-596.doi: 10.3969/j.issn.1673-8225.2012.04.005

Previous Articles     Next Articles

Establishment of a normal human lumbar three-dimensional finite element model based on CT image and reverse engineering methods

Hao Jian1, Piao Zhe1, Li Ji-hai1, Li Wa-li1, Mu Guang-tao1, Hao Jun-hang1, Shen Yi-xin2, Niu Wen-xin3   

  1. 1Department of Orthopedics, Tianjin Nankai Hospital, Tianjin  300100, China; 2Department of Orthopedics, Second Affiliated Hospital of Soochow University, Suzhou  215004, Jiangsu Province, China; 3Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, School of Biological Science and Medical Engineering, Beihang University, Beijing  100191, China
  • Received:2011-09-01 Revised:2011-11-08 Online:2012-01-22 Published:2014-04-04
  • Contact: Shen Yi-xin, Chief physician, Professor, Department of Orthopedics, Second Affiliated Hospital of Soochow University, Suzhou 215004, Jiangsu Province, China laser1977@163.com
  • About author:Hao Jian★, Master, Attending physician, Department of Orthopedics, Tianjin Nankai Hospital, Tianjin 300100, China laser19770912@163.com

PDF

586

Cited

5

Abstract:

BACKGROUND: Finite element method can analyze biomechanics of normal human spinal under stationary and activity, and also can predict risk of stress.
OBJECTIVE: To establish a three-dimensional finite element model of normal human L3-L5 motion segment.
METHODS: In this study, a detailed L3-L5 level three-dimensional finite element model of a normal aged 30 men was established with the aid of two softwares, Geomagic and Ansys, which can derive a three-dimensional finite element model from CT images. Then border conditions and load were set. Angular displacement and stress concentration sites were recorded. Average model stiffness was calculated.
RESULTS AND CONCLUSION: A finite element model of the spinal segments (L3-L5) was developed, including vertebrae, ligament, disc, fibrous ring and the facet joints. The model had 51 905 units. The model was validated by quantitative and qualitative. Three-dimensional finite element model of L3-L5 motion segment is approximate to the natural biomechanical of spine and it can be used for further study.

CLC Number: