Biomechanical testing of an artificial cervical joint and an anterior cervical plate

Denis Diangelo, James T. Roberston, Newton H. Metcalf, Bobby J. McVay, R. Champ Davis

Research output: Contribution to journalArticle

173 Citations (Scopus)

Abstract

An in vitro biomechanical study was conducted to determine the effects of fusion and nonfusion anterior cervical instrumentation on cervical spine biomechanics in a multilevel human cadaveric model. Three spine conditions were studied: harvested, single-level artificial cervical joint, and single-level graft with anterior cervical plate. A programmable testing apparatus was used that replicated physiologic flexion/extension and lateral bending. Measurements included vertebral motion, applied load, and bending moments. Relative rotations at the superior, implanted, and inferior motion segment units (MSUs) were normalized with respect to the overall rotation of those three MSUs and compared using a one-way analysis of variance (P < 0.05). Application of an anterior cervical plate decreased motion across the fusion site relative to the harvested and artificial joint spine conditions. The reduced motion was compensated for by an increase in motion at the adjacent segments. Use of an artificial cervical joint did not alter the motion patterns at either the instrumented level or the adjacent segments compared with the harvested condition for all modes of testing.

Original languageEnglish (US)
Pages (from-to)314-323
Number of pages10
JournalJournal of Spinal Disorders and Techniques
Volume16
Issue number4
DOIs
StatePublished - Jan 1 2003

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Joints
Spine
Biomechanical Phenomena
Analysis of Variance
Transplants

All Science Journal Classification (ASJC) codes

  • Surgery
  • Orthopedics and Sports Medicine
  • Clinical Neurology

Cite this

Biomechanical testing of an artificial cervical joint and an anterior cervical plate. / Diangelo, Denis; Roberston, James T.; Metcalf, Newton H.; McVay, Bobby J.; Champ Davis, R.

In: Journal of Spinal Disorders and Techniques, Vol. 16, No. 4, 01.01.2003, p. 314-323.

Research output: Contribution to journalArticle

Diangelo, Denis ; Roberston, James T. ; Metcalf, Newton H. ; McVay, Bobby J. ; Champ Davis, R. / Biomechanical testing of an artificial cervical joint and an anterior cervical plate. In: Journal of Spinal Disorders and Techniques. 2003 ; Vol. 16, No. 4. pp. 314-323.
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