Linka, Kevin Peirlinck, Mathias Sahli Costabal, Francisco Kuhl, Ellen
Published in
Computer methods in biomechanics and biomedical engineering
For the first time in history, on March 17, 2020, the European Union closed all its external borders in an attempt to contain the spreading of the coronavirus 2019, COVID-19. Throughout two past months, governments around the world have implemented massive travel restrictions and border control to mitigate the outbreak of this global pandemic. Howe...
Rahchamani, Reza Soheilifard, Reza
Published in
Computer methods in biomechanics and biomedical engineering
A correct choice of stem geometry can increase the lifetime of hip implant in a total hip arthroplasty. This study presents a numerical methodology for structural optimization of stem geometry using a bi-directional evolutionary structural optimization method. The optimization problem was formulated with the objective of minimizing the stresses in ...
Cesar, R Bravo-Castillero, J Ramos, R R Pereira, C A M Zanin, H Rollo, J M D A
Published in
Computer methods in biomechanics and biomedical engineering
Osteoporosis is an osteometabolic disease, which promotes structural degradation of bone tissue and reduction of mineral density. We reported here a mechanical resistance assay from normal, osteopenic and osteoporotic trabecular vertebral bones of human cadavers. We performed a compressed test on ninety samples, evaluating Young's modulus and X-ray...
Guo, Li-Xin Li, Wu-Jie
Published in
Computer methods in biomechanics and biomedical engineering
Finite element method is an efficient tool to investigate the biomechanics of human spine. The key to finite element method is to reconstruct a complete and accurate finite element model. In this study, a three-dimensional finite element model of thoracolumbar structure including complete pelvis (T12-pelvis) was built using computed tomography tech...
Schwarzenberg, Peter Dailey, Hannah L
Published in
Computer methods in biomechanics and biomedical engineering
In patient-specific finite element modeling, elementwise material assignment calculates local mechanical properties from the underlying CT data. If meshes must be transformed, for example to reconstruct broken bones, this elementwise material mapping is not possible using commercial software. Accordingly, we developed an algorithm to transform and ...
Liu, Yuanjie Zhou, Qing Gan, Shun Nie, Bingbing
Published in
Computer methods in biomechanics and biomedical engineering
Biomechanical behavior of ankle ligaments varies among individuals, with the underlying mechanism at multiple scales remaining unquantified. The present probabilistic study investigated how population variability in ligament material properties would influence the joint mechanics. A previously developed finite element ankle model with parametric li...
de Gelidi, Serena Bucchi, Andrea
Published in
Computer methods in biomechanics and biomedical engineering
Despite the general interest in aneurysm rupture prediction, the aneurysm formation has received limited attention. The goal of this study is to assess whether an aneurysm may be instigated in a healthy model of an aorta inflated by a supra-physiological pressure. The effect of two main aspects on numerical predictions has been explored: i) the geo...
Jahanzamin, Jahanbakhsh Fatouraee, Nasser Nasiraei-Moghaddam, Abbas
Published in
Computer methods in biomechanics and biomedical engineering
Vortex structures, as one of the most important features of cardiac flow, have a crucial impact on the left ventricle function and pathological conditions. These swirling flows are closely related to the presence of turbulence in left ventricle which is investigated in the current study. Using an extended model of the left heart, including a fluid-...
Barrios-Muriel, Jorge Romero Sánchez, Francisco Alonso Sánchez, Francisco Javier Rodríguez Salgado, David
Published in
Computer methods in biomechanics and biomedical engineering
When designing any rehabilitation, sportswear or exoskeleton device the mechanical behaviour of the body segment must be known, specifically the skin, because an excessive tissue strain may lead to ulceration and bedsores. To date, it is not known if the kinematic variability between subjects have an effect on the skin strain field, and therefore, ...
Zhou, Chaochao Cha, Thomas Li, Guoan
Published in
Computer methods in biomechanics and biomedical engineering
Prediction of the biomechanical effects of fusion surgery on adjacent segments is a challenge in computational biomechanics of the spine. In this study, a two-segment L3-L4-L5 computational model was developed to simulate the effects of spinal fusion on adjacent segment biomechanical responses under a follower load condition. The interaction betwee...
