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Design of Biomechanical Testing Methods and Metrics to Evaluate the Performance of Synthetic Spinal Implants Versus Bone Graft for Lumbar Corpectomy

[+] Author Affiliations
P. Huang, S. Hazelwood, M. Gupta, R. Roberto

University of California at Davis, Sacramento, CA

N. Sarigul-Klijn

University of California at Davis, Davis, CA

Paper No. IMECE2007-43319, pp. 295-299; 5 pages
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 2: Biomedical and Biotechnology Engineering
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4296-7 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME


The human spine is a mechanically complex system of joints crucial for stable posture and movement. The ultimate goal of a vertebral body replacement following a spinal injury that necessitates such a procedure is to have the replacement strut fully incorporate into the spine. This incorporation process is known as bony “fusion”, which facilitates the restoration of stability. Bone graft and metallic implants have been used for vertebral body replacement procedures. Both methods have been associated with failure of fusion and recurrence of instability. The development and rationale of the mechanical testing procedures implemented to best differentiate the stability afforded by bone graft versus expandable titanium cage is presented.

Copyright © 2007 by ASME



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