Validation and verification of L3-L5 lumbar three-dimensional finite element model
10.3969/j.issn.2095-4344.2013.35.007
- VernacularTitle:腰椎L3-L5三维有限元模型的有效性验证**☆
- Author:
Hao XU
;
Qiulin ZHANG
;
Hao TANG
;
Bo CHEN
- Publication Type:Journal Article
- Keywords:
bone and joint implants;
basic experiment of spinal cord injury;
three-dimensional finite element analysis of bone and joint;
lumbar spine;
finite element;
biomechanics;
stress;
spine;
computed tomography;
meshing;
disc;
provincial grants-supported paper
- From:
Chinese Journal of Tissue Engineering Research
2013;(35):6261-6266
- CountryChina
- Language:Chinese
-
Abstract:
BACKGROUND:Creation of a precise finite element model is an important basis for the finite element mechanical analysis of the spine. The reports on the precise finite element model are less.
OBJECTIVE:To create L 3-L 5 lumbar three-dimensional finite element model and validate this model with normal CT data.
METHODS:A 39-year-old male healthy volunteer with the height of 175 cm and weighted 65 kg was selected, then the L 3-L 5 lumbar spines were scanned with 16 row spiral CT to obtain 101 CT images with the thickness of 1.25 mm. Solid geometric model was established with Geomagic9.0 software, then determined the unit type,
divided the finite element mesh, and established the finite element model for loading and calculating.
RESULTS AND CONCLUSION:A L 3-L 5 lumbar three-dimensional finite element model was established. It
included 213 736 nodes and 799 779 elements. The ranges of motion of L 3-L 4 and L 4-L 5 segments of the model were consistent with cadaveric biomechanical testing results, verified the effectiveness of the model, so the
model could be used for experimental research.
