Publication detail

Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach

RIDWAN-PRAMANA, A. MARCIÁN, P. BORÁK, L. NARRA, N. FOROUZANFAR, T. WOLFF, J.

Original Title

Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Cranioplasty; FEM; PMMA; Cranial implant; Mechanical properties; plate distribution; fixation geometry

Authors

RIDWAN-PRAMANA, A.; MARCIÁN, P.; BORÁK, L.; NARRA, N.; FOROUZANFAR, T.; WOLFF, J.

Released

13. 6. 2017

Publisher

PLOS

ISBN

1932-6203

Periodical

PLOS ONE

Year of study

12

Number

6

State

United States of America

Pages from

1

Pages to

16

Pages count

16

URL

https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0179325

Full text in the Digital Library

http://hdl.handle.net/11012/193256

BibTex

@article{BUT137080,
  author="Angela {Ridwan-Pramana} and Petr {Marcián} and Libor {Borák} and Nathaniel {Narra} and Tim {Forouzanfar} and Jan {Wolff}",
  title="Finite element analysis of 6 large PMMA skull reconstructions: A multi-criteria evaluation approach",
  journal="PLOS ONE",
  year="2017",
  volume="12",
  number="6",
  pages="1--16",
  doi="10.1371/journal.pone.0179325",
  issn="1932-6203",
  url="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0179325"
}