A Method to Calculate the AIS Trauma Score from a Finite Element Model

Christophe Bastien, Clive Neal Sturgess, Jesper Christensen, Lianjie Wen

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    Abstract

    In the real world, traumatic injuries are measured using the Abbreviated Injury Scale (AIS), however, such a scale cannot be computed to date or the injury precisely located by using human computer models. These models use stresses and strains to evaluate whether serious or fatal injuries are reached, which unfortunately bear no direct relation to AIS. This paper proposes to overcome this deficiency and suggests a unique Organ Trauma Model (OTM) able to calculate the risk to life of any organ injury, focussing in this case on real-life pedestrian head injuries. The OTM uses a power method, named Peak Virtual Power (PVP), and defines a brain white and gray matters trauma response as a function of impact direction and impact speed. The OTM was tested against four real-life pedestrian accidents and proved to predict the head trauma severity and location. In some cases, the method did however under-estimate the trauma by 1 AIS level because of post-impact haemorrhage which cannot be captured with Lagrangian Finite Element solvers. The OTM has the potential to create an important advance in vehicle safety by adding more information on the risk of head trauma.

    Original languageEnglish
    Article number2050034
    Pages (from-to)(In-press)
    JournalJournal of Mechanics in Medicine and Biology
    Volume20
    Issue number6
    DOIs
    Publication statusPublished - 24 Aug 2020

    Bibliographical note

    Electronic version of an article published as Journal of Mechanics in Medicine and Biology, vol. 20, no. 6, 2020, 2050034. https://dx.doi.org/10.1142/S0219519420500347 ©copyright World Scientific Publishing Company.

    Copyright © and Moral Rights are retained by the author(s) and/ or other copyright owners. A copy can be downloaded for personal non-commercial research or study, without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

    Keywords

    • Abbreviated injury scale
    • Organ trauma model
    • Peak virtual power

    ASJC Scopus subject areas

    • Biomedical Engineering

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