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3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding
Current fixation plates for bone fracture treatments are built with biocompatible metallic materials such as stainless steel, titanium, and its alloys (e.g., Ti6Al4V). The stiffness mismatch between the metallic material of the plate and the host bone leads to stress shielding phenomena, bone loss,...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Whioce Publishing Pte. Ltd.
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8287512/ https://www.ncbi.nlm.nih.gov/pubmed/34286146 http://dx.doi.org/10.18063/ijb.v7i3.339 |
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author | Al-Tamimi, A. A. |
author_facet | Al-Tamimi, A. A. |
author_sort | Al-Tamimi, A. A. |
collection | PubMed |
description | Current fixation plates for bone fracture treatments are built with biocompatible metallic materials such as stainless steel, titanium, and its alloys (e.g., Ti6Al4V). The stiffness mismatch between the metallic material of the plate and the host bone leads to stress shielding phenomena, bone loss, and healing deficiency. This paper explores the use of three dimensional topology-optimization, based on compliance (i.e., strain energy) minimization, reshaping the design domain of three locking compression plates (four-screw holes, six-screw holes, and eight-screw holes), considering different volume reductions (25, 45, and 75%) and loading conditions (bending, compression, torsion, and combined loads). A finite-element study was also conducted to measure the stiffness of each optimized plate. Thirty-six designs were obtained. Results showed that for a critical value of volume reductions, which depend on the load condition and number of screws, it is possible to obtain designs with lower stiffness, thereby reducing the risk of stress shielding. |
format | Online Article Text |
id | pubmed-8287512 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Whioce Publishing Pte. Ltd. |
record_format | MEDLINE/PubMed |
spelling | pubmed-82875122021-07-19 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding Al-Tamimi, A. A. Int J Bioprint Research Article Current fixation plates for bone fracture treatments are built with biocompatible metallic materials such as stainless steel, titanium, and its alloys (e.g., Ti6Al4V). The stiffness mismatch between the metallic material of the plate and the host bone leads to stress shielding phenomena, bone loss, and healing deficiency. This paper explores the use of three dimensional topology-optimization, based on compliance (i.e., strain energy) minimization, reshaping the design domain of three locking compression plates (four-screw holes, six-screw holes, and eight-screw holes), considering different volume reductions (25, 45, and 75%) and loading conditions (bending, compression, torsion, and combined loads). A finite-element study was also conducted to measure the stiffness of each optimized plate. Thirty-six designs were obtained. Results showed that for a critical value of volume reductions, which depend on the load condition and number of screws, it is possible to obtain designs with lower stiffness, thereby reducing the risk of stress shielding. Whioce Publishing Pte. Ltd. 2021-07-01 /pmc/articles/PMC8287512/ /pubmed/34286146 http://dx.doi.org/10.18063/ijb.v7i3.339 Text en Copyright: © 2021 Al-Tamimi, et al. https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Attribution-NonCommercial 4.0 International 4.0 (CC BY-NC 4.0), which permits all non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited. |
spellingShingle | Research Article Al-Tamimi, A. A. 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding |
title | 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding |
title_full | 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding |
title_fullStr | 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding |
title_full_unstemmed | 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding |
title_short | 3D Topology Optimization and Mesh Dependency for Redesigning Locking Compression Plates Aiming to Reduce Stress Shielding |
title_sort | 3d topology optimization and mesh dependency for redesigning locking compression plates aiming to reduce stress shielding |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8287512/ https://www.ncbi.nlm.nih.gov/pubmed/34286146 http://dx.doi.org/10.18063/ijb.v7i3.339 |
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