Open AccessDevelopment of a 3-y-old Pediatric Cervical Spine Finite Element Model
Author(s) -
Na Li,
Wei Wei,
Siwen Wu,
Xian ping Du,
Yin Liu,
Pengfei Rong
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/542/1/012035
Subject(s) - lamina , materials science , cancellous bone , ligament , finite element method , displacement (psychology) , ultimate tensile strength , anatomy , periodontal fiber , anterior longitudinal ligament , composite material , structural engineering , orthodontics , medicine , psychology , ossification , engineering , psychotherapist
A 3-year-old pediatric cervical spine finite element (FE) model with detailed anatomical and material properties was developed and validated against cadaver tests under both quasi-static loadings. First, bone geometry was reconstructed based on high-resolution computed tomography (CT) scans, and elastic-plastic material was defined to simulate the cortical and cancellous bones. To simulate various ligament tears during dynamic tensile, ligament failure was defined using force versus displacement curves, which had a sigmoidal shape governed by three control points. To better represent the complicated structure of the disc, nucleus pulposus, annulus fibrosus substrate and four pairs of reinforced fiber lamina, intervertebral discs were defined using composite materials combined with viscoelastic material, hill foam material and four pairs of reinforced fiber lamina, respectively. This FE model could be utilized in prediction of cervical spine fracture, ligament and disc tear underlying pediatric cervical injuries.