A NEW NECK INJURY CRITERION CANDIDATE-BASED ON INJURY FINDINGS IN THE CERVICAL SPINAL GANGLIA AFTER EXPERIMENTAL NECK EXTENSION TRAUMA

In this study a mathematical model, based on Navier Stokes equations, was developed and validated against experimental data. This model predicts the pressure changes in the spinal canal as a function of the volume change inside the canal during neck bending in the x-z (sagittal) plane. Another aim of the study was to investigate pressure phenomena and ganglion injuries at static neck extension loading and dynamic neck extension trauma with a head-restraint present. Experiments on pigs were conducted. Preliminary results indicate that ganglion injuries, as well as pressure transients inside the spinal canal, seem to correlate to the phase shift when the neck passes an s-shape (or maximal retraction) during the rearward motion of the head. That is, when the upper neck quickly changes from a flexion to an extension shape. Static loading of the neck resulted in no signs of injuries to the ganglia. A possible candidate for a neck injury criterion is presented, based on the relative acceleration between the top and the bottom of the cervical spine. A tolerance level based on the pig tests is also discussed. For the covering abstract of the conference see IRRD E201282.

• Corporate Authors:

  IRCOBI (International Research Council on the Biokinetics of Impacts)

  109 Avenue Salvador Allende
  Bron CEDEX,   France  F-69675
• Authors:
  • BOSTROEM, O
  • SVENSSON, M Y
  • ALDMAN, B
  • HANSSON, H A
  • HAALAND, Y
  • Loevsund, P
  • SEEMAN, T
  • Suneson, A
  • SAELJOE, A
  • OERTENGREN, T
• Conference:
  • PROCEEDINGS OF THE 1996 INTERNATIONAL IRCOBI CONFERENCE ON THE BIOMECHANICS OF IMPACT, SEPTEMBER 11-13, 1996, DUBLIN, IRELAND
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: p. 123-36

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Animals; Biophysics; Conferences; Evaluation and assessment; Head; Headrests; Injuries; Mathematical models; Motion; Pressure; Rear end crashes; Spinal column; Test procedures; Tolerance (Physiology); Vertebrae
• ITRD Terms: 5405: Acceleration; 2459: Animal; 2060: Biomechanics; 2040: Cervical vertebrae; 8525: Conference; 9020: Evaluation (assessment); 1399: Head restraint; 2051: Human tolerance; 2163: Injury; 6473: Mathematical model; 5483: Movement; 5412: Pressure; 1620: Rear end collision; 2041: Spinal column; 6288: Test method
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00767056
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Files: ITRD
• Created Date: Aug 6 1999 12:00AM