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

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 li

SUBMITTER: Ridwan-Pramana A 

PROVIDER: S-EPMC5469477 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature