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Numerical evaluation of bone remodelling associated with trans-femoral osseointegration implant--A 68 month follow-up study.

Xu, DH, Crocombe, AD and Xu, W (2016) Numerical evaluation of bone remodelling associated with trans-femoral osseointegration implant--A 68 month follow-up study. Journal of Biomechanics, 49 (3). pp. 488-492.

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Abstract

Osseointegrated trans-femoral implant is a relatively new orthopaedic anchoring method for connecting a stump with a prosthesis. Through a follow-up study of a patient over six years, significant bone remodelling has been observed. Finite element (FE) simulations were carried out to investigate the relationship between the bone remodelling and the strain re-distribution around the trans-femoral osseointegrated implant system. An initial FE model representing the original status of the femur-implant assembly was created from CT scans of the subject prior to osseointegration. Follow-up X-ray images were acquired at various stages post-surgery, which allowed the changes in bone wall thickness to be measured. By updating the bone thickness in the initial model, a series of follow-up FE models were created. Representative load associated with the subject's body weight was applied to the models, and the strain re-distributions were calculated. The results showed that in order to minimise the adverse effect of bone remodelling, an osseointegration implant made by functionally gradient materials are preferred over homogeneous materials.

Item Type: Article
Subjects : Mechanical Engineering
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
AuthorsEmailORCID
Xu, DHUNSPECIFIEDUNSPECIFIED
Crocombe, ADUNSPECIFIEDUNSPECIFIED
Xu, WUNSPECIFIEDUNSPECIFIED
Date : 8 February 2016
Identification Number : 10.1016/j.jbiomech.2015.12.028
Copyright Disclaimer : © 2016 Elsevier Ltd. All rights reserved.
Uncontrolled Keywords : Bone remodelling, Finite element analysis, Femur, Osseointegration, Implant
Depositing User : Symplectic Elements
Date Deposited : 18 Jul 2016 10:57
Last Modified : 26 Oct 2016 08:56
URI: http://epubs.surrey.ac.uk/id/eprint/811239

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