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Herniated Intervertebral Disc l: Introduction

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A Novel Vertebral Stabilization Method for Producing Contusive Spinal Cord Injury
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Published on: January 5, 2015

Thoracic and lumbar spinal impact tolerance.

Cameron R 'Dale' Bass1, Karin A Rafaels, Robert S Salzar

  • 1University of Virginia, Center for Applied Biomechanics, 1011 Linden Avenue, Charlottesville, VA 22902, USA. bass@virginia.edu

Accident; Analysis and Prevention
|March 11, 2008
PubMed
Summary

This study established a porcine model for human spinal impact injuries. The research determined a 10,200 N force poses a 50% injury risk, crucial for developing new safety standards.

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Area of Science:

  • Biomechanics
  • Spinal Injury Research
  • Trauma Analysis

Background:

  • Thoracolumbar injuries from accidents pose significant risks.
  • Current standards for these injuries lack biomechanical basis.

Purpose of the Study:

  • Determine human injury tolerance for direct spinal impact.
  • Establish biomechanically based standards for thoracolumbar injuries.

Main Methods:

  • Utilized four cadaveric porcine specimens for direct spinal impact.
  • Compared porcine anthropometrics to human cadaver data.
  • Applied five impacts to the dorsal thorax and abdomen of specimens.

Main Results:

  • Injuries included spinous process and endplate fractures, with anterior longitudinal ligament (ALL) transactions (max AIS=3).
  • Average peak forces for thoracic and lumbar failure were 4720±1340 N and 4650±1590 N, respectively.
  • Scaled human injury tolerance force for 50% risk is 10,200±3900 N.

Conclusions:

  • Validated the porcine model for human spinal impact simulation.
  • The derived injury risk value can inform new safety standards.
  • Findings can guide the design of protective equipment for the back.