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Changes in Foraminal Geometry With Anterior Decompression Versus Keyhole Foraminotomy in the Cervical Spine: A Biomechanical Investigation

[+] Author Affiliations
Bryant Chu

The Taylor Collaboration Laboratories, San Francisco, CA

Calvin Kuo, Jackie Nguyen

St. Mary’s Spine Center, San Francisco, CA

Jeremi Leasure

The Taylor Collaboration Laboratories, San Francisco, CASt. Mary’s Spine Center, San Francisco, CA

Christopher Ames

University of California, San Francisco, San Francisco, CA

Dimitriy Kondrashov

St. Mary’s Spine Center, San Francisco, CASan Francisco Orthopaedic Residency Program, San Francisco, CA

Paper No. SBC2013-14222, pp. V01AT09A010; 2 pages
  • ASME 2013 Summer Bioengineering Conference
  • Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments
  • Sunriver, Oregon, USA, June 26–29, 2013
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-5560-7
  • Copyright © 2013 by ASME


Cervical spondylosis can be treated with various surgical decompression techniques, notably anterior cervical decompression and fusion (ACDF) and posterior keyhole foraminotomy1. Although each procedure has distinct methods, there is no compelling evidence in the literature to advocate one over the other. Furthermore, subtle differences within the techniques have yet to be examined such as the salvage or resection of uncovertebral joints during ACDF. Systematic reviews2,5 and meta-analyses3 have not elucidated significant differences in pain improvement between ACDF techniques, and no study has compared clinical outcomes for ACDF versus posterior foraminotomy, the two most popular cervical decompression techniques to date. We provide benchtop evidence as to the relative effectiveness of foraminotomy, ACDF with or without resection, and a combination of all surgeries. We hypothesized that ACDF with uncovertebral resection would be most effective to open the neuroforamina. Results of this study inform best practices for cervical decompression surgeries.

Copyright © 2013 by ASME



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