Effect of head-neck position on cervical facet stretch of post mortem human subjects during low speed rear end impacts.

Author(s)
Sundararajan, S. Prasad, P. Demetropoulos, C.K. Tashman, S. Begeman, P.C. Yang, K.H. & King, A.I.
Year
Abstract

The purpose of this study was to determine the effect of head-neck position on cervical facet stretch during low speed rear end impact. Twelve tests were conducted on four Post Mortem Human Subjects (PMHS) in a generic bucket seat environment. Three head positions, namely Normal (neutral), Zero Clearance between the head and head restraint, and Body Forward positions were tested. A high-speed x-ray system was used to record the motion of cervical vertebrae during these tests. Results demonstrate that: a) The maximum mean facet stretch at head restraint contact occurs at MS4 and MS5 for the Body Forward condition, b) The lower neck flexion moment, prior to head contact, shows a non-linear relationship with facet stretch, and c) "Differential rebound" during rear end impact increases facet stretch. Author/publisher)

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Publication

Library number
20042033 o ST (In: ST 20042033 [electronic version only])
Source

In: Stapp Car Crash Journal Volume 48 : papers presented at the 48th Stapp Car Crash Conference, Nashville, Tennessee, USA, November 1-3, 2004, Technical Paper 2004-22-0015, p. 331-372, 43 ref.

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