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Anthropometric measurements and ejection injuries

M Edwards1

  • 1Naval Aerospace and Operational Medical Institute, Naval Air Station Pensacola, FL, USA.

Aviation, Space, and Environmental Medicine
|December 1, 1996
PubMed
Summary
This summary is machine-generated.

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Heavier and taller aircrew face higher risks of severe injury and spinal fractures during aircraft ejections. This study confirms that body weight and height are significant risk factors for ejection-related injuries.

Area of Science:

  • Aviation Safety
  • Biomechanics
  • Occupational Health

Background:

  • Previous research linked lower body weight and tall, thin physiques (low BMI) to increased risk of ejection seat-induced back injuries.
  • Ejection seat safety is crucial given the increasing number of female pilots and potential need for modifications for lighter aviators.

Purpose of the Study:

  • To re-evaluate and confirm previous findings on ejection seat risk factors using current data from 1989-1993.
  • To identify anthropometric variables associated with ejection-related injuries, including severe injuries and spinal fractures.

Main Methods:

  • Retrospective analysis of Naval Safety Center data for aircrew involved in mishaps.
  • Defined back injury criteria including vertebral fractures and soft tissue injuries.

Related Experiment Videos

  • Analyzed anthropometric variables: weight, height, BMI, sitting height, and trunk height.

    • Main Results:

    • Out of 199 ejections, 111 (56%) resulted in injury, with 8 (4%) severe injuries and 4 (2%) fatalities.
    • Back injuries occurred in 44 (22%) ejections, including 8 (4%) with spinal fractures.
    • While no significant risk factors for general ejection back injury were found, heavier aircrew (88 kg) had severe injuries, and taller aircrew (185 cm) had increased risk of spinal fractures.

    Conclusions:

    • Aircrew with severe ejection injuries were heavier on average.
    • Taller aircrew demonstrated a higher risk for sustaining any spinal fracture during ejections.