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Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach
In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were employed to create multiple plan options, which were subsequently computationally...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469477/ https://www.ncbi.nlm.nih.gov/pubmed/28609471 http://dx.doi.org/10.1371/journal.pone.0179325 |
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author | Ridwan-Pramana, Angela Marcián, Petr Borák, Libor Narra, Nathaniel Forouzanfar, Tymour Wolff, Jan |
author_facet | Ridwan-Pramana, Angela Marcián, Petr Borák, Libor Narra, Nathaniel Forouzanfar, Tymour Wolff, Jan |
author_sort | Ridwan-Pramana, Angela |
collection | PubMed |
description | In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were employed to create multiple plan options, which were subsequently computationally analyzed for mechanically relevant parameters under 50N loads: stress, strain and deformation in various components of the assembly. The factors assessed were: defect size, location and shape. The major variable in the cranioplasty assembly design was the arrangement of the fixation plates. An additional study variable introduced was the location of the 50N load within the implant area. It was found that in smaller defects, it was simpler to design a symmetric distribution of plates and under limited variability in load location it was possible to design an optimal for expected loads. However, for very large defects with complex shapes, the variability in the load locations introduces complications to the intuitive design of the optimal assembly. The study shows that it can be beneficial to incorporate multi design computational analyses to decide upon the most optimal plan for a clinical case. |
format | Online Article Text |
id | pubmed-5469477 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-54694772017-07-03 Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach Ridwan-Pramana, Angela Marcián, Petr Borák, Libor Narra, Nathaniel Forouzanfar, Tymour Wolff, Jan PLoS One Research Article In this study 6 pre-operative designs for PMMA based reconstructions of cranial defects were evaluated for their mechanical robustness using finite element modeling. Clinical experience and engineering principles were employed to create multiple plan options, which were subsequently computationally analyzed for mechanically relevant parameters under 50N loads: stress, strain and deformation in various components of the assembly. The factors assessed were: defect size, location and shape. The major variable in the cranioplasty assembly design was the arrangement of the fixation plates. An additional study variable introduced was the location of the 50N load within the implant area. It was found that in smaller defects, it was simpler to design a symmetric distribution of plates and under limited variability in load location it was possible to design an optimal for expected loads. However, for very large defects with complex shapes, the variability in the load locations introduces complications to the intuitive design of the optimal assembly. The study shows that it can be beneficial to incorporate multi design computational analyses to decide upon the most optimal plan for a clinical case. Public Library of Science 2017-06-13 /pmc/articles/PMC5469477/ /pubmed/28609471 http://dx.doi.org/10.1371/journal.pone.0179325 Text en © 2017 Ridwan-Pramana et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Ridwan-Pramana, Angela Marcián, Petr Borák, Libor Narra, Nathaniel Forouzanfar, Tymour Wolff, Jan Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach |
title | Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach |
title_full | Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach |
title_fullStr | Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach |
title_full_unstemmed | Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach |
title_short | Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach |
title_sort | finite element analysis of 6 large pmma skull reconstructions: a multi-criteria evaluation approach |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469477/ https://www.ncbi.nlm.nih.gov/pubmed/28609471 http://dx.doi.org/10.1371/journal.pone.0179325 |
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