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An Improved Testing Protocol for Evaluating Anterior Spinal Instrumentation Using Graft Loads in a Single-Level Cervical Discectomy or Corpectomy Model

[+] Author Affiliations
Denis J. DiAngelo, Geza Osztheimer, Kevin T. Foley

University of Tennessee Health Science Center, Memphis, TN

Paper No. IMECE2002-32629, pp. 389-390; 2 pages
doi:10.1115/IMECE2002-32629
From:
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Advances in Bioengineering
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-3650-9 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME

abstract

Anterior cervical instrumentation used in discectomy or corpectomy graft fusion should restore the mechanical integrity of the operated spine and decrease graft complications. For fusion to occur, the spinal instrumentation must load-share with the interbody graft. Recent design changes in anterior cervical plates (ACP) aim to allow motion across the fusion site and load share with the graft [1]. However, existing American Society for Testing and Materials (ASTM) standards (F1717-96) for static and fatigue testing of spinal implant constructs in a corpectomy model do not include an interbody graft in the test method [2]. The objective of this study was to develop a non-destructive testing protocol and apparatus to rank the static and low-endurance performance of ACP instrumentation in single-level discectomy and corpectomy graft-plate models.

Copyright © 2002 by ASME

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