In-vitro kinematic testing of porcine cervical spine: A rotational manipulation model

Jim M. W. NGAN, Hung Kay Daniel CHOW, Andrew D. HOLMES, Malcolm H. POPE, Alon LAI

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2 Citations (Scopus)

Abstract

Although spinal manipulation is widely used in the management of neck and pain, its exact mechanisms and biomechancial effects are not clear. A porcine model was used to study the relative movements of intervertebral joints under spinal rotation maneuvers with different input angular displacements and thrust velocities. Ten porcine spines (C2/4) were fixed and mounted in a material testing machine. Rotational maneuvers with different input angular displacements (0.8, 1.5, 2 and 3°) and thrust velocities (0.1 - 200°/s) were applied to C2 with C4 fixed. Angular displacement induced at the adjacent level was measured and expressed as percentage of the applied angular displacement. For all the tested conditions, angular deformation at the adjacent level could not be avoided when an angular thrust was applied to the target level. The percentage of the angular displacement induced at the adjacent level was found to be dependent on both the input angular displacement and thrust velocity. If rapid thurst of manipulation is used to direct the input energy and motion at the target level with minimal interference at the adjacent levels, the applied angular displacement should not be too large and the thrust velocity should be within a medium velocity range. Copyright © 2009 ISPO.
Original languageEnglish
Pages (from-to)89-98
JournalProsthetics and Orthotics International
Volume33
Issue number1
DOIs
Publication statusPublished - Mar 2009

Fingerprint

Biomechanical Phenomena
Spine
Swine
Spinal Manipulation
Materials Testing
Neck Pain
Joints
In Vitro Techniques

Citation

Ngan, J. M. W., Chow, D. H. K., Holmes, A. D., Pope, M. H., & Lai, A. (2009). In-vitro kinematic testing of porcine cervical spine: A rotational manipulation model. Prosthetics and Orthotics International, 33(1), 89-98. doi: 10.1080/03093640802698923

Keywords

  • Biomechanics
  • Kinematics
  • Rotational manipulations
  • Porcine spine