Biomechanical analysis of damaged intervertebral disc using reflective photoelasticity
DOI:
https://doi.org/10.17533/udea.redin.n78a10Keywords:
stress distribution, lumbar section, damaged intervertebral disc, photoelastic analysisAbstract
This paper presents an experimental evaluation of the structural integrity of the lumbar section (L2-L3-L4) considering a damaged intervertebral disc. In this study, porcine specimens were used due to the similarity of the mechanical properties of those of the human spine. The lumbar section L2-L3-L4 was tested under compression. Five cases were analyzed; in the first one, the lumbar section consisted of healthy intervertebral discs. For the other four cases, the disc located between L2 and L3 was divided into four quadrants: front, back, left and right. For each of these cases, a damage condition was induced by making an incision from the annular fibers to the pulpous nucleus, covering each quadrant; the back elements (pedicles and facet joint) were removed and only the vertebral bodies and discs were tested. As a damaged intervertebral disc is unable to properly perform its mechanical function, the load transferred from L2 to L3 through the disc is no longer optimal. The actual stress field on L3, considering the damaged disc, was obtained using reflective photoelasticity for each one of the previously mentioned study cases. The results show that the induced damage in the intervertebral discs increases the stresses on L3 considerably when compared to the case of an undamaged disc, being the most critical when the damage is located in the back quadrant of the disc. In the other three cases, the damaged disc does not reduce the the structural integrity of the vertebral body significantly. However, the inter-vertebrae space is reduced as a result of the damage, thus compromising the structural integrity of the studied lumbar section.
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L. Moreno, G. Gonzalez, L. Galan and S. Espinosa, “Cirugía fallida del disco intervertebral lumbar: Etiología”, Rev. Mex. Ortop. Traum., vol. 9, no. 1, pp. 21- 23, 1995.
J. McCulloch, “Focus issue on lumbar disc herniation: Macro and microdiscectomy”, Spine, vol. 21, no. 24, pp. 45S-56S, 1996.
W. Caspar, B. Campbell, D. Barbier, R. Kretschmmer and Y. Gotfried, “The Caspar microsurgical discectomy and comparison with a conventional standard lumbar disc procedure”, Neurosurgery, vol. 28, no. 1, pp. 78- 86, 1991.
M. Wenger, L. Mariani, A. Kalbarckzyk and U. Gröger, “Long Term outcome of 104 patients after lumbar sequestrectomy according to Williams”, Neurosurgery, vol. 49, no. 2, pp. 329-334, 2001.
M. Savitz, “Lumbar disk disease: Controversies in Neurosurgery”, Mt. Sinai J. Med., vol. 58, no. 2, pp. 95- 96, 1991.
F. Nykvist, M. Hurme, H. Alaranta and M. Kaitsaari, “Severe Sciatica: a 13-year follow-up of 342 patients”, Eur. Spine J., vol. 4, no. 6, pp. 335-338, 1995.
P. Donceel and M. Du Bois, “Fitness for work after surgery for lumbar disc herniation: a retrospective study”, Eur. Spine J., vol. 7, no. 1, pp. 29-35, 1998.
J. Dickey, G. Dumas and D. Bednar, “Comparison of porcine and human lumbar spine flexion mechanics”, Veterinary and Comparative Orthopaedics and Traumatology, vol. 16, no. 1, pp. 44-49, 2003.
A. Nachemson and J. Evans, “Some mechanical properties of the third human lumbar interlaminar ligament (ligamentum flavum)”, J. Biomech., vol. 1, no. 3, pp. 211-220, 1968.
D. Espino, J. Meakin, D. Hukins and J. Reid, “Stochastic finite element analysis of biological systems: Comparison of a simple intervertebral disc model with experimental result”, Comput. Method. Biomec., vol. 6, no. 4, pp. 243-248, 2003.
F. Phillips, J. Reuben and F. Wetzel, “Intervertebral disc degeneration adjacent to a lumbar fusion. An experimental rabbit model”, J. Bone Joint Surg. Br., vol. 84, no. 2, pp.289-294, 2002.
M. Naohisa et al., “Outcome of one-level posterior lumbar interbody fusion for spondylolisthesis and postoperative intervertebral disc degeneration adjacent to the fusion”, Spine, vol. 25, no. 14, pp. 1837- 1842, 2000.
G. Ghiselli, J. Wang, N. Bhatia, W. Hsu and E. Dawson, “Adjacent segment degeneration in the lumbar spine”, J. Bone Joint Surg., vol. 86, no. 7, pp. 1497-1503, 2004.
C. Aultman, J. Drake, J. Callaghan and S. McGill, “The effect of static torsion on the compressive strength of the spine: an in vitro analysis using a porcine spine model”, Spine, vol. 29, no. 15, pp. E304-E309, 2004.
A. White y M. Panjabi, Clinical Biomechanics of the Spine, 2nd ed. Philadelphia, USA: Lippincott Williams & Wilkins, 1990.
A. Baranto et al., “Vertebral fractures and separations of endplates after traumatic loading of adolescent porcine spines with experimental-induced disc degeneration”, Clin. Biomech., vol. 20, no. 10, pp. 1046- 1054, 2005.
M. Adams, D. McMillan, T. Green and P. Dolan, “Sustained loading generates stress concentrations in lumbar intervertebral discs”, Spine, vol. 21, no. 4, pp. 434-438, 1996.
H. Ranu, “Measurement of pressures in the nucleus and within the annulus of the human spinal disc: due to extreme loading”, Proc. Inst. Mech. Eng. H., vol. 204, no. 3, pp. 141-146, 1990.
K. Sato, S. Kikuchi and T. Yonezawa, “In vivo intradiscal pressure measurement in healthy individuals and in patients with ongoing back problems”, Spine, vol. 24, no. 23, pp. 2468-2474, 1999.
X. Wang and G. Dumas, “Evaluation of effects of selected factors on inter-vertebral fusion – a simulation study”, Med. Eng. Phys., vol. 27, no. 3, pp. 197-207, 2005.
H. Mathews, J. Lehuec, T. Friesem, T. Zdeblick and L. Eisermann, “Design rationale and biomechanics of Maverick Total Disc arthroplasty with early clinical results”, Spine J., vol. 4, no. 6, pp. 268S-275S, 2004.
J. Zigler, “Lumbar spine arthroplasty using the ProDisc II”, Spine J., vol. 4, no. 6, pp. 260S-267S, 2004.
A. Fantigrossi, F. Galbusera, M. Raimondi, M. Sassi and M. Fornari, “Biomechanical analysis of cages for posterior lumbar interbody fusion”, Med. Eng. Phys., vol. 29, no. 1, pp. 101-109, 2006.
S. Trincat, G. Edgard-Rosa, G. Geneste and T. Marnay, “Two-level lumbar total disc replacement: Functional outcomes and segmental motion after 4 years”, Orthopaedics & Traumatology: Surgery & Research, vol. 101, no. 1, pp. 17-21, 2015.
A. Meir, B. Freeman, R. Fraser and S. Fowler, “Ten-year survival and clinical outcome of the AcroFlex lumbar disc replacement for the treatment of symptomatic disc degeneration”, Spine J., vol. 13, no. 1, pp. 13-21, 2013.
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