A Finite Element Analysis Model is Suitable for Biomechanical Analysis of Orbital Development.
Journal
The Journal of craniofacial surgery
ISSN: 1536-3732
Titre abrégé: J Craniofac Surg
Pays: United States
ID NLM: 9010410
Informations de publication
Date de publication:
01 Oct 2021
01 Oct 2021
Historique:
entrez:
27
10
2021
pubmed:
28
10
2021
medline:
30
10
2021
Statut:
ppublish
Résumé
The authors investigated orbital bone development in congenital microphthalmia (CM) using a three-dimensional finite element analysis model, after the orbital dimension deficiency was improved with a self-inflating hydrogel expander implant.Data of a 2-year-old male CM patient were examined. The orbital structure, eyeball, eye muscles, and self-inflating hydrogel expander were constructed according to computed tomography examination data. The effects of self-expanding spherical hydrogel at various locations in the muscle cone on orbital bone development were examined using 3-mL self-expanding expanders placed at shallow (model 1: 2 mm depth) and deep (model 2: 8 mm depth) muscle cone positions. This model simulated the hydrogel expansion process; the orbital bone biomechanics and radial displacement nephograms were obtained when the hydrogel volume increased 3, 5, 7, and 9 times and analyzed.The orbital bone biomechanics were concentrated at the medial orbital wall center, gradually spreading to the whole orbital wall. Biomechanics and radial displacement of the inferior temporal and lateral distal orbital wall region were the most significant, and were more significant in model 1 than in model 2.Finite element analysis is suitable for the biomechanical analysis of orbital development in CM. The shallow position inside CM patients' muscle cone is the optimal site for hydrogel implantation.
Identifiants
pubmed: 34705364
doi: 10.1097/SCS.0000000000007558
pii: 00001665-202110000-00072
doi:
Substances chimiques
Hydrogel, Polyethylene Glycol Dimethacrylate
25852-47-5
Types de publication
Case Reports
Journal Article
Langues
eng
Pagination
2546-2550Informations de copyright
Copyright © 2021 by Mutaz B. Habal, MD.
Déclaration de conflit d'intérêts
The authors report no conflicts of interest.
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