Establishment and Analysis of the Finite Element Model on Atlantoaxial Instability
YU Yang
LI Mingwu
DONG Mingyan
GUO Qunfeng
CHEN Jinshui
NI Bin
Abstract：Objective To establish the three-dimensional finite element model of atlantoaxial instability and explore its clinical significance. Methods By first establishing the three-dimensional nonlinear finite element model of the normal upper cervical spine, on the basis of which clinical cases of cervical vertebra instability were combined, the three-dimensional finite element model of the up-per cervical instability was established and finite element analysis was carried out through the application of the finite element software. In flexion, extension, lateral flexion, rotation and other conditions, the differences of activity between normal model and dislocation model were measured and compared. Results The established finite element model was clear in appearance and had good geometric similarity. The activity of the upper cervical instability model was increased apparently compared with the normal upper cervical spine model, which was consistent with the in vitro biomechanical experimental results. Conclusion The establishment of the three-dimen-sional finite element model provides a convenient and accurate method. The nonlinear three-dimensional finite element model of upper cervical instability can better simulate the clinical cases, so as to guide the clinical treatment strategy.
Keywords：upper cervical spinethree-dimensional finite element modelmedical engineering
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 46-48 )