EFFECT OF HEAD-NECK POSITION ON CERVICAL FACET STRETCH OF POST MORTEM HUMAN SUBJECTS DURING LOW SPEED REAR END IMPACTS

Twelve tests were performed on four Post Mortem Human Subjects in a generic bucket seat environment. The goal of this research was to ascertain the effect of head-neck position on cervical fact stretch during low speed rear end collisions. Three head positions - Body Forward, Zero Clearance between the head and the head restraint, and Normal (neutral) positions - were tested. A high-speed x-ray system recorded the motion of cervical vertebrae during the tests. Results show that: (1) the maximum mean facet stretch at head restraint contact occurs as MS4 and MS5 for the Body Forward position. (2) The lower neck flexion moment, before head contact, shows a non-linear relationship with facet stretch. (3) "Differential rebound" during rear end impact increases facet stretch.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/1640206
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Sundararajan, S
  • Prasad, P
  • Demetropoulos, Constantine K
  • Tashman, S
  • Begeman, P C
  • Yang, K H
  • King, A I
• Publication Date: 2004-11

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 331-372
• Serial:
  • Stapp Car Crash Journal
  • Volume: 48
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 1532-8546
  • Serial URL: http://www.stapp.org/pubs.shtml

Subject/Index Terms

• TRT Terms: Crash injury research; Head; Headrests; Human subject testing; Neck; Rear end crashes; Speed; Vertebrae; Whiplash
• Uncontrolled Terms: Bucket seats
• Subject Areas: Highways; Research; Safety and Human Factors; I84: Personal Injuries;

Filing Info

• Accession Number: 00988825
• Record Type: Publication
• ISBN: 0768014468
• Report/Paper Numbers: 2004-22-0015
• Files: TRIS
• Created Date: Apr 13 2005 12:00AM