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Related Concept Videos

Flail Chest-II01:26

Flail Chest-II

160
Managing flail chest, a condition characterized by a segment of the chest wall moving independently from the rest of the thoracic cage, requires a comprehensive approach. It includes a thorough assessment of the patient's condition, a diagnostic evaluation to determine the extent of the injury, and the implementation of appropriate medical interventions tailored to the individual's needs.
Assessment:
1. Clinical Evaluation:
History:
160

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Related Experiment Video

Updated: Jun 5, 2025

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
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Behind Amor Blunt Trauma Lung and Liver Strains From Indenter Loading Via Finite Element Modeling.

Narayan Yoganandan1,2, Karthik Somasundaram2, Balaji Harinathan3,4

  • 1Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI 53226; Department of Veterans Affairs Medical Center, Medical College of Wisconsin, Milwaukee, WI 53226.

Journal of Engineering and Science in Medical Diagnostics and Therapy
|December 12, 2024
PubMed
Summary

This study used human body models to simulate blunt impacts, finding higher mass indenters increase injury risk. Cylindrical indenters may offer organ protection by distributing force over a larger ribcage area.

Keywords:
behind armor blunt traumafinite element modelimpact loadingliver injurieslung injuriesstrain energy density

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Area of Science:

  • Biomechanics
  • Injury Biomechanics
  • Finite Element Analysis

Background:

  • Behind Armor Blunt Trauma (BABT) research requires validated injury criteria.
  • Previous BABT studies utilized limited indenter designs, necessitating broader investigation.

Purpose of the Study:

  • To evaluate injury parameters from different indenter designs using human body finite element modeling.
  • To assess the influence of indenter shape and mass on blunt trauma kinematics and injury metrics.

Main Methods:

  • Human body finite element models were subjected to impacts from chord and cylindrical indenters (150g, 230g) at 30 m/s and 60 m/s.
  • Simulations focused on liver and lung impacts, analyzing rib and lung strains, and liver strain energy densities (SED).

Main Results:

  • Higher indenter mass correlated with increased skeletal and organ trauma susceptibility, especially at high velocities.
  • The cylindrical indenter demonstrated potential for organ protection due to broader ribcage loading compared to the chord indenter.

Conclusions:

  • Indenter design significantly influences behind armor blunt trauma outcomes.
  • Findings suggest cylindrical indenters may offer a protective effect for organ injuries, while chord indenters provide conservative injury estimates.