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Mechanical Sciences An open-access journal for theoretical and applied mechanics
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Volume 6, issue 2
Mech. Sci., 6, 255-263, 2015
https://doi.org/10.5194/ms-6-255-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Mech. Sci., 6, 255-263, 2015
https://doi.org/10.5194/ms-6-255-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 10 Dec 2015

Research article | 10 Dec 2015

The intradiscal failure pressure on porcine lumbar intervertebral discs: an experimental approach

A. R. G. Araújo, N. Peixinho, A. Pinho, and J. C. P. Claro A. R. G. Araújo et al.
  • Department of Mechanical Engineering, University of Minho, Guimarães, Portugal

Abstract. The intervertebral disc is submitted to complex loading during its normal daily activities which are responsible for variations of the hydrostatic pressure in its structure. Thus, the determination of the magnitude of failure hydrostatic pressure is essential as a potential for the evaluation of the mechanisms that promote the weakening and the disruption of the annular fibers, commonly linked to herniation process on the spine column. However, few studies include the determination of the failure pressure on discs and the results are widely contradictory. Therefore, the objective of the present work is to determine the values of IDP that promotes the disc disruption. To achieve this goal, the tests were performed using a hydraulic cylinder that inflates the intervertebral disc. The results revealed a mean pressure failure of 0.62 ± 0.08 MPa for lumbar porcine samples (n = 6). From this approach it can be concluded that (1) the potential for disc injury may exist at low pressures for lumbar porcine discs when compared several animal and human ones; (2) the rupture of human cervical and porcine lumbar annular fibers could occur for values of intradiscal pressure that are within the physiological range.

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The intervertebral disc is submitted to complex loading, which are responsible for variations of the hydrostatic pressure in its structure. The objective of the present work is to determine the internal pressure that promotes the porcine disc disruption. The tests were performed using a hydraulic cylinder that inflates the discs. It was concluded that potential for porcine disc injury may exist at low pressures for and the rupture could occur within intradiscal physiological pressures.
The intervertebral disc is submitted to complex loading, which are responsible for variations of...
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