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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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.
|Subjects :||Mechanical Engineering|
|Divisions :||Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences|
|Date :||8 February 2016|
|Identification Number :||https://doi.org/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|
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