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Related Experiment Videos

Force and acceleration corridors from lateral head impact.

Narayan Yoganandan1, Jiangyue Zhang, Frank Pintar

  • 1Department of Neurosurgery Medical College of Wisconsin and VA Medical Center, Milwaukee, Wisconsin, USA. yoga@mcw.edu

Traffic Injury Prevention
|November 17, 2004
PubMed
Summary

This study provides crucial biomechanical data for human head side impacts. More research is needed to establish human tolerance limits for these types of impacts.

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Area of Science:

  • Biomechanics
  • Head Injury Research
  • Human Subject Testing

Background:

  • Understanding the dynamic biomechanics of the human head is critical for injury prevention.
  • Existing data on lateral head impacts is limited, necessitating further experimental investigation.

Purpose of the Study:

  • To establish force and acceleration corridors for the lateral region of the human head at various velocities.
  • To describe the dynamic biomechanics of temporo-parietal impacts.

Main Methods:

  • Temporo-parietal impact tests were performed on ten unembalmed post-mortem human subjects.
  • Specimens were instrumented with triaxial accelerometers and impacted at velocities up to 7.7 m/s.
  • Force and acceleration data were recorded, and post-impact CT scans identified pathologies.

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Main Results:

  • Four specimens sustained skull fractures during the impact tests.
  • Peak force, displacement, acceleration, energy, and head injury criterion variables were quantified.
  • Experimental data provides a basis for validating finite element models of head impact.

Conclusions:

  • The study provides valuable dynamic biomechanical data for lateral head impacts.
  • An increased sample size is recommended to derive probability-based human tolerance to side impacts.