canine long bone; finite element method; bone fracture; bending tests
Abstract :
[en] Long bone fracture constitutes a common reason for
medical consultation within veterinary orthopaedic
services. Owing to the specificities of the veterinary
field, post-operative complications after a fracture
osteosynthesis are usually more numerous than those in
human medicine, and therefore, there is a need to better
understand which orthopaedic device(s) should be
preferred for a given fracture. The interest of subjectspecific
finite element (FE) simulations in the understanding
of long bone mechanics has been largely
emphasised (Helgason et al. 2008; Schileo et al. 2008).
However, available studies are often limited by the many
assumptions made throughout the procedure of creating a
validated subject-specific FE model of a long bone,
including geometry acquisition and modelling, assignment
of realistic material properties and accurate validation of
FE results based on ex vivo experiments. Particularly,
fracture prediction has often been limited to the fracture
onset prediction based on arbitrary criteria. Based on these
previous studies, the objective of the present contribution
is to propose and compare different subject-specific FE
models of long bones that could accurately predict long
bone response and failure.
Disciplines :
Mechanical engineering
Author, co-author :
Laurent, Cédric
Bohme, Béatrice
d'Otreppe de Bouvette, Vinciane
Balligand, Marc ; Université de Liège - ULiège > Dép. clinique des animaux de compagnie et des équidés (DCA) > Chirurgie et clinique chirurgicale des petits animaux
Ponthot, Jean-Philippe ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
Subject-specific finite element modelling of canine long bones up to fracture
Publication date :
2013
Journal title :
Computer Methods in Biomechanics and Biomedical Engineering. Imaging and Visualization
d'OtreppeVBomanRPonthotJ.-P. 2012. Generating smooth surface meshes from multi-region medical images. Int J Numer Methods Biomed Eng.28:642-660.
HelgasonBTaddeiFPalssonHSchileoECristofoliniLVicecontiMBrynjolfssonS. 2008. A modified method for assigning material properties to FE models of bones. Med Eng Phys.30:444-453.
PithiouxMSubitDChabrandP. 2004. Comparison of compact bone failure under two different loading rates: experimental and modelling approaches. Med Eng Phys.26:647-653.
PonthotJ.-P. 2002. Unified stress update algorithms for the numerical simulation of large deformation elasto-plastic and elasto-viscoplastic processes. Int J Plasticity.18:91-126.
SchileoETaddeiFCristofoliniLVicecontiM. 2008. Subject-specific finite element models implementing a maximum principal strain criterion are able to estimate failure risk and fracture location on human femurs tested in vitro. J Biomech.41:356-367.
WirtzDCSchiffersNPandorfTRadermacherKWeichertDForstR. 2000. Critical evaluation of known bone material properties to realize anisotropic FE-simulation of the proximal femur. J Biomech.33:1325-1330.