The Finite Element Analysis of Osteoporotic Lumbar Vertebral Body by Influence of Trabecular Bone Apparent Density and Thickness of Cortical Shell-Reference-Cited by-同舟云学术

The Finite Element Analysis of Osteoporotic Lumbar Vertebral Body by Influence of Trabecular Bone Apparent Density and Thickness of Cortical Shell

Published:2017-12-01 Issue:4 Volume:11 Page:285-292
ISSN:2300-5319
Container-title:Acta Mechanica et Automatica
language:en
Short-container-title:

Author:

Ardatov Oleg¹,Maknickas Algirdas²,Alekna Vidmantas³,Tamulaitienė Marija³,Kačianauskas Rimantas²

Affiliation:

1. Faculty of Mechanics, Department of Biomechanics , Vilnius Gediminas Technical University , Basanavičiaus 28, 03224 Vilnius , Lithuania

2. Faculty of Mechanics, Institute of mechanical Science , Vilnius Gediminas Technical University , Basanavičiaus 28, 03224 Vilnius , Lithuania

3. Faculty of Medicine , Vilnius University , Čiurlionio 21, 03101 Vilnius , Lithuania

Abstract

Abstract Osteoporosis causes the bone mass loss and increased fracture risk. This paper presents the modelling of osteoporotic human lumbar vertebrae L1 by employing finite elements method (FEM). The isolated inhomogeneous vertebral body is composed by cortical out-er shell and cancellous bone. The level of osteoporotic contribution is characterised by reducing the thickness of cortical shell and elasticity modulus of cancellous bone using power-law dependence with apparent density. The strength parameters are evaluated on the basis of von Mises-Hencky yield criterion. Parametric study of osteoporotic degradation contains the static and nonlinear dynamic analysis of stresses that occur due to physiological load. Results of our investigation are presented in terms of nonlinear interdependence between stress and external load.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Control and Systems Engineering

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