The Spine Journal
Volume 10, Issue 5 , Pages 417-421 , May 2010

In vitro evaluation of stiffness and load sharing in a two-level corpectomy: comparison of static and dynamic cervical plates

  • Guy R. Fogel, MD

      Affiliations

    • Spine Orthopedic Institute, 21 Spurs Lane, San Antonio, TX 78240, USA
    • ,
  • Zhenyu Li, MD

      Affiliations

    • Shenzhen Second Hospital, Shenzhen, China
    • ,
  • Weiqiang Liu, PhD

      Affiliations

    • Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University, Shenzhen 518057, China
    • Corresponding Author InformationCorresponding author. Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University, Shenzhen 518057, China. Tel: (86) 755-26551376; fax: (86) 755-26551338.
    • ,
  • Zhenhua Liao, MS

      Affiliations

    • Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University, Shenzhen 518057, China
    • ,
  • Jia Wu, MS

      Affiliations

    • Biomechanics and Biotechnology Lab, Research Institute of Tsinghua University, Shenzhen 518057, China
    • ,
  • Wenyu Zhou, MD

      Affiliations

    • Spine Orthopedic Institute, 21 Spurs Lane, San Antonio, TX 78240, USA

Received 14 July 2009 ,Revised 29 December 2009 ,Accepted 5 February 2010.

References 

  1. Reidy D, Finkelstein J, Nagpurkar A, et al. Cervical spine loading characteristics in a cadaveric C5 corpectomy model using a static and dynamic plate. J Spinal Disord. 2004;17:117–122
  2. Rhee JM, Riew KD. Dynamic anterior cervical plates. J Am Acad Orthop Surg. 2007;15:640–646
  3. Epstein NE. Anterior cervical dynamic ABC plating with single level corpectomy and fusion in forty-two patients. Spinal Cord. 2003;41:153–158
  4. Groff MW, Sriharan S, Lee SM, Maiman DJ. Partial corpectomy for cervical spondylosis. Spine. 2003;28:14–20
  5. Vaccaro AR, Falatyn SP, Scuderi GJ, et al. Early failure of long segment anterior cervical plate fixation. J Spinal Disord. 1998;11:410–415
  6. DiAngelo DJ, Foley KT, Liu W. Biomechanical stability of multi-level cervical spine instrumentation: comparison of constrained versus semiconstrained anterior cervical plates. In: Proceedings of the IV World Congress of Biomechanics; 2002; Calgary, Alberta, Canada.
  7. Foley KT, DiAngelo DJ, Rampersaud YR, et al. The in vitro effects of instrumentation on multilevel cervical strut-graft mechanics. Spine. 1999;24:2366–2376
  8. DiAngelo DJ, Foley KT, Vossel KA, et al. Anterior cervical plating reverses load transfer through multilevel strut-grafts. Spine. 2000;25:783–795
  9. Brodke DS, Gollogly S, Alexander Mohr R, et al. Dynamic cervical plates: biomechanical evaluation of load sharing and stiffness. Spine. 2001;26:1324–1329
  10. Rapoff AJ, Conrad BP, Johnson WM, et al. Load sharing in premier and Zephir anterior cervical plates. Spine. 2003;28:2648–2650discussion 2651
  11. Casha S, Fehlings MG. Clinical and radiological evaluation of the Codman semiconstrained load-sharing anterior cervical plate: prospective multicenter trial and independent blinded evaluation of outcome. J Neurosurg. 2003;99(3 Suppl):264–270
  12. Nunley PD, Jawahar A, Kerr EJ, et al. Choice of plate may affect outcomes for single versus multilevel ACDF: results of a prospective randomized single-blind trial. Spine J. 2009;9:121–127
  13. Schmidt R, Richter M, Claes L, et al. Limitations of the cervical porcine spine in evaluating spinal implants in comparison with human cervical spinal segments: a biomechanical in vitro comparison of porcine and human cervical spine specimens with different instrumentation techniques. Spine. 2005;30:1275–1282

 FDA device/drug status: DePuy USA Swift plate approved.

 Author disclosures: none.

 Corporate and institution funds were received.

PII: S1529-9430(10)00103-8

doi: 10.1016/j.spinee.2010.02.004

The Spine Journal
Volume 10, Issue 5 , Pages 417-421 , May 2010

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