Characterization of the mechanical behaviour parameters of the costo-vertebral joint

European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
D LemosseF Lavaste

Abstract

This in vitro study introduces a new method to determine quantitative parameters characterizing the mechanical behaviour of the costo-vertebral joint. These parameters are useful in building numerical models of the thoracic spine, taking into account the thoracic cage. Nine thoracic cages were isolated from fresh human cadavers. From each cage, three functional units were tested: T1-T2, T5-T6, T9-T10. Loads were applied according to the joint local coordinate system. Every functional unit was tested first intact and again after section of successive costo-transverse ligaments. We used an opto-electronic system to follow the three-dimensional motion of the joint, and obtained non-linear load/displacement curves according to the primary rotation axis. A statistical analysis of these curves allowed the calculation of parameters describing the joint mechanical behaviour: total range of motion, motion in the low-stiffness zone, and flexibilities in the positive and negative quasi-linear zones. These values can be used as a database for mechanical modeling of the spine.

Citations

Dec 27, 2011·Medical & Biological Engineering & Computing·J Paige Little, Clayton Adam
Aug 10, 2011·Traffic Injury Prevention·Matthew KindigRichard W Kent
Jan 28, 2003·Journal of Neurosurgery·Aaron A Cohen-GadolWilliam E Krauss
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Apr 27, 2020·Anatomical Science International·Benoît BeyerVéronique Feipel
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