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Collagen Fiber Organization in the Cervical Facet Capsular Ligament Following Painful Facet Joint Distraction in the Rat

[+] Author Affiliations
Kathryn E. Lee, Beth A. Winkelstein

University of Pennsylvania, Philadelphia, PA

Paper No. SBC2007-176125, pp. 593-594; 2 pages
  • ASME 2007 Summer Bioengineering Conference
  • ASME 2007 Summer Bioengineering Conference
  • Keystone, Colorado, USA, June 20–24, 2007
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-4798-5
  • Copyright © 2007 by ASME


Chronic neck pain following whiplash is a substantial problem, affecting as many as 42% of whiplash patients [1]. The cervical facet joint is a common candidate for producing neck pain because it sustains altered kinematics during whiplash, with tensile stretch of its capsular ligament exceeding that during normal motions [2,3]. Altered facet capsule mechanics have been documented for loading conditions below structural failure [4,5]; evidence of both decreased linear stiffness and minor ruptures of the capsule suggest ligament injury prior to failure. In vivo studies have also implicated subfailure capsule injury as a potential source of pain. Capsule nociceptive pain fiber activation and saturation [6], as well as sustained pain symptoms [7], can be produced for facet joint distraction below gross failure.

Copyright © 2007 by ASME
Topics: Fibers



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