Details

Title

Bone Remodelling Model Incorporating Both Shape and Internal Structure Changes by Three Different Reconstruction Mechanisms. A Lumbar Spine Case

Journal title

Archive of Mechanical Engineering

Yearbook

2016

Numer

No 4

Keywords

Mechanical Engineering ; Mechanics of Materials

Divisions of PAS

Nauki Techniczne

Abstract

<jats:title>Abstract</jats:title><jats:p>The paper presents a method of analysis of bone remodelling in the vicinity of implants. The authors aimed at building a model and numerical procedures which may be used as a tool in the prosthesis design process. The model proposed by the authors is based on the theory of adaptive elasticity and the lazy zone concept. It takes into consideration not only changes of the internal structure of the tissue (described by apparent density) but also surface remodelling and changes caused by the effects revealing some features of “creep”. Finite element analysis of a lumbar spinal segment with an artificial intervertebral disc was performed by means of the Ansys system with custom APDL code. The algorithms were in two variants: the so-called siteindependent and site-specific. Resultant density distribution and modified shape of the vertebra are compared for both of them. It is shown that this two approaches predict the bone remodelling in different ways. A comparison with available clinical outcomes is also presented and similarities to the numerical results are pointed out.</jats:p>

Publisher

Polish Academy of Science, Committe of Machine Design

Date

2016

Identifier

ISSN 0004-0738, e-ISSN 2300-1895

DOI

10.1515/meceng-2016-0031

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