Establishment and validation for a 3D finite element model of cervicothoracic junction C5-T2
10.3871/j.1004-7220.2015.01.056
- VernacularTitle:脊柱颈胸结合部C5~T2三维有限元建模与验证
- Author:
Gai-ping ZHAO
1
;
Xin-guo FANG
1
;
Chen-xi WANG
1
;
Lei-lei BAI
1
;
Qing-hua ZHAO
2
;
Shi-xiong XU
3
;
Er-yun CHEN
4
Author Information
1. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology
2. Department of Orthopedics, Shanghai First People’s Hospital
3. Department of Mechanics and Engineering Science, Fudan University
4. School of Energy and Power Engineering, University of Shanghai for Science and Technology
- Publication Type:Journal Article
- Keywords:
Cervical vertebrae;
Thoracic vertebrae;
Cervicothoracic junction;
Finite element analysis;
Mechanical properties
- From:
Journal of Medical Biomechanics
2015;30(1):E056-E061
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish a 3D finite element model of cervicothoracic spinal segments C5-T2 based on CT images and test its validity and effectiveness. Methods By using the Mimics, Geomagic and Hypermesh software, the 3D model of cervicothoracic spinal segments C5-T2 was reconstructed, repaired and pre-processed. Moment of ±0.5, 1, 1.5, 2 N•m were applied on top of the model to simulate loads produced during the flexion and extension movement of human body. The range of motion (ROM) of the segments C5-T2 during flexion and extension was calculated by ANSYS, and the reliability of the model was verified by comparing the experimental results in the previous literature with the finite element analysis results obtained in this study. Results Under the moment of 1 N•m, the ROMs of C5-6, C6-7, C7-T1 and T1-2 during flexion were 4.30°,3.21°,1.66° and 1.41°, and those during extension were 3.47°, 2.86°, 0.96° and 0.92°, respectively. The maximum stress during flexion appeared on the front of the vertebral body, while that during extension appeared on the back of the vertebral body. The trends of ROM and stress distributions were consistent with results reported in the previous literature. Conclusions The 3D model established in this study is accurate and realistic, and conforms to biomechanical properties of the cervicothoracic spine. The simulation results can be further used to explore clinical pathology of the spine and provide theoretical references for evaluation on cervicothoracic spine surgery.
