Prediction of Anterior Vertebral Body Tethering Outcomes with Patient-Specific Finite Element Modelling

2020 ◽  
Author(s):  
Christian Reynold D'Andrea
Keyword(s):  
Finite Element ◽  
Vertebral Body ◽  
Finite Element Modelling ◽  
Patient Specific ◽  
Element Modelling

scholarly journals Size Effects in Finite Element Modelling of 3D Printed Bone Scaffolds Using Hydroxyapatite PEOT/PBT Composites

Mathematics ◽  
2021 ◽  
Vol 9 (15) ◽  
pp. 1746
Author(s):  
Iñigo Calderon-Uriszar-Aldaca ◽  
Sergio Perez ◽  
Ravi Sinha ◽  
Maria Camara-Torres ◽  
Sara Villanueva ◽  
...  
Keyword(s):  
Finite Element ◽  
Additive Manufacturing ◽  
Tissue Regeneration ◽  
Finite Element Modelling ◽  
Bulk Material ◽  
Bone Tissue Regeneration ◽  
Patient Specific ◽  
Design Factor ◽  
Element Modelling ◽  
Uncertainty Sources

Additive manufacturing (AM) of scaffolds enables the fabrication of customized patient-specific implants for tissue regeneration. Scaffold customization does not involve only the macroscale shape of the final implant, but also their microscopic pore geometry and material properties, which are dependent on optimizable topology. A good match between the experimental data of AM scaffolds and the models is obtained when there is just a few millimetres at least in one direction. Here, we describe a methodology to perform finite element modelling on AM scaffolds for bone tissue regeneration with clinically relevant dimensions (i.e., volume > 1 cm3). The simulation used an equivalent cubic eight node finite elements mesh, and the materials properties were derived both empirically and numerically, from bulk material direct testing and simulated tests on scaffolds. The experimental validation was performed using poly(ethylene oxide terephthalate)-poly(butylene terephthalate) (PEOT/PBT) copolymers and 45 wt% nano hydroxyapatite fillers composites. By applying this methodology on three separate scaffold architectures with volumes larger than 1 cm3, the simulations overestimated the scaffold performance, resulting in 150–290% stiffer than average values obtained in the validation tests. The results mismatch highlighted the relevance of the lack of printing accuracy that is characteristic of the additive manufacturing process. Accordingly, a sensitivity analysis was performed on nine detected uncertainty sources, studying their influence. After the definition of acceptable execution tolerances and reliability levels, a design factor was defined to calibrate the methodology under expectable and conservative scenarios.

scholarly journals Direct medical image-based Finite Element modelling for patient-specific simulation of future implants

2017 ◽  
Vol 136 ◽  
pp. 37-57 ◽  
Author(s):  
L. Giovannelli ◽  
J.J. Ródenas ◽  
J.M. Navarro-Jiménez ◽  
M. Tur
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Medical Image ◽  
Patient Specific ◽  
Element Modelling

Prediction of stenting related adverse events through patient-specific finite element modelling

2018 ◽  
Vol 79 ◽  
pp. 135-146 ◽  
Author(s):  
Alessandro Caimi ◽  
Francesco Sturla ◽  
Francesca Romana Pluchinotta ◽  
Luca Giugno ◽  
Francesco Secchi ◽  
...  
Keyword(s):  
Finite Element ◽  
Adverse Events ◽  
Finite Element Modelling ◽  
Patient Specific ◽  
Element Modelling

scholarly journals Finite Element Modelling of Stent Deployment in a Patient-specific Coronary Artery

2019 ◽  
Vol 15 ◽  
pp. 28-32
Author(s):  
Ran He ◽  
Liguo Zhao ◽  
Vadim V. Silberschmidt ◽  
Yang Liu ◽  
Felix Vogt
Keyword(s):  
Finite Element ◽  
Coronary Artery ◽  
Finite Element Modelling ◽  
Patient Specific ◽  
Stent Deployment ◽  
Element Modelling

scholarly journals Stress analysis of interbody fusion––finite element modelling of intervertebral implant and vertebral body

2003 ◽  
Vol 18 (4) ◽  
pp. 265-272 ◽  
Author(s):  
Clayton Adam ◽  
Mark Pearcy ◽  
Peter McCombe
Keyword(s):  
Finite Element ◽  
Stress Analysis ◽  
Vertebral Body ◽  
Finite Element Modelling ◽  
Interbody Fusion ◽  
Element Modelling

scholarly journals Patient-Specific Finite Element Modelling and Validation of Porcine Femora in Torsion

Strain ◽  
2013 ◽  
Vol 49 (3) ◽  
pp. 212-220 ◽  
Author(s):  
Nicholas J. Emerson ◽  
Amaka C. Offiah ◽  
Gwendolen C. Reilly ◽  
Matt J. Carré
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Patient Specific ◽  
Element Modelling

Finite-element modelling of concrete prisms reinforced with composite plates - Theory of cracking

10.1617/14073 ◽  
2005 ◽  
Vol 38 (276) ◽  
pp. 219-227
Author(s):  
S. Kesteloot
Keyword(s):  
Finite Element ◽  
Finite Element Modelling ◽  
Composite Plates ◽  
Element Modelling
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