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Head & Face Medicine
Published in: Head & Face Medicine 1/2015

Open Access 01-12-2015 | Research

Does facial soft tissue protect against zygomatic fractures? Results of a finite element analysis

Authors: Heike Huempfner-Hierl, Alexander Bohne, Andreas Schaller, Gert Wollny, Thomas Hierl

Published in: Head & Face Medicine | Issue 1/2015

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Abstract

Introduction

Zygomatic fractures form a major entity in craniomaxillofacial traumatology. Few studies have dealt with biomechanical basics and none with the role of the facial soft tissues. Therefore this study should investigate, whether facial soft tissue plays a protecting role in lateral midfacial trauma.

Methods

A head-to-head encounter was simulated by way of finite element analysis. In two scenarios this impact - with and without soft tissues - was investigated to demonstrate the potential protective effects. To achieve realism, a transient simulation was chosen, which considers temporal dynamics and realistic material parameters derived from CT grey values.

Results

The simulation results presented a typical zygomatic fracture with all relevant fracture lines. Including soft tissues did not change the maximum bony stress pattern, but increased the time period from impact to maximal stresses by 1.3 msec.

Conclusions

Although this could have clinical implications, facial soft tissues may be disregarded in biomechanical simulations of the lateral midface, if only the bony structures are to be investigated. Soft tissue seems to act as a temporal buffer only.
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Metadata
Title
Does facial soft tissue protect against zygomatic fractures? Results of a finite element analysis
Authors
Heike Huempfner-Hierl
Alexander Bohne
Andreas Schaller
Gert Wollny
Thomas Hierl
Publication date
01-12-2015
Publisher
BioMed Central
Published in
Head & Face Medicine / Issue 1/2015
Electronic ISSN: 1746-160X
DOI
https://doi.org/10.1186/s13005-015-0078-5

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