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Related Concept Videos

Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...

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Mild traumatic brain injury predictors based on angular accelerations during impacts.

Hideyuki Kimpara1, Masami Iwamoto

  • 1Vehicle Safety & Biomechanics Laboratory, Toyota Central R&D Labs., Inc., 41-1 Yokomichi, Nagakute, Aichi, 480-1192, Japan. h-kimpara@mosk.tytlabs.co.jp

Annals of Biomedical Engineering
|October 14, 2011
PubMed
Summary
This summary is machine-generated.

New criteria, Rotational Injury Criterion (RIC) and Power Rotational Head Injury Criterion (PRHIC), were developed to assess head injuries from rotational acceleration. These criteria show strong correlation with brain injury predictors, aiding in TBI assessment.

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Area of Science:

  • Biomechanics
  • Neuroscience
  • Sports Medicine

Background:

  • Current Head Injury Criterion (HIC) effectively assesses linear acceleration head injuries but lacks criteria for rotational kinematics.
  • Traumatic Brain Injury (TBI) encompasses various injury types, including those from rotational forces, necessitating advanced assessment tools.

Purpose of the Study:

  • To propose and validate novel injury criteria, Rotational Injury Criterion (RIC) and Power Rotational Head Injury Criterion (PRHIC), specifically for rotational head impacts.
  • To correlate these new criteria with established Finite Element (FE) model-based predictors of TBI, such as Cumulative Strain Damage Measure (CSDM).

Main Methods:

  • Utilized head acceleration data from football impacts (concussive and non-concussive) to develop RIC and PRHIC.
  • Employed a validated human brain FE model to simulate TBI.
  • Performed correlation analyses between RIC/PRHIC and FE-based CSDM to predict Diffuse Axonal Injury (DAI).

Main Results:

  • RIC demonstrated significant correlation (R > 0.89) with CSDM at strain thresholds <15%, indicating potential for predicting mild TBI.
  • PRHIC showed strong correlation (R > 0.90) with CSDM at strain thresholds ≥20%, suggesting its utility in predicting more severe TBI.
  • Both criteria proved effective in assessing rotational head impact severity.

Conclusions:

  • RIC and PRHIC offer promising new metrics for evaluating head injuries caused by rotational kinematics.
  • These criteria can aid in understanding and predicting TBI severity, particularly Diffuse Axonal Injury (DAI).
  • Further validation in diverse impact scenarios is recommended.