Biomechanical properties of human lumbar spine ligaments

Pintar, Frank A.; Yoganandan, Narayan; Myers, Thomas J.; Elhagediab, Ali M.; Sances, Anthony

doi:10.1016/0021-9290(92)90290-h

Cited by 293 publications

(146 citation statements)

References 13 publications

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“…By developing a complete set of data from one laboratory, variations due experimental procedure are reduced (Pintar et al, 1992). This variation is difficult to represent when combining or comparing data from different studies without reducing the fidelity of the modelling.…”

Section: Research Objectives and Approachmentioning

confidence: 99%

“…Two previous studies have developed average curves, by first normalizing the raw data curves, followed by averaging the non-dimensionalized values at each elongation point (Pintar et al, 1992;Yoganandan et al, 1998;Yoganandan et al, 2000). The average curves were then scaled to the average failure force and elongation values.…”

Section: Development Of Average Curvesmentioning

confidence: 99%

See 1 more Smart Citation

Strain rate dependent properties of younger human cervical spine ligaments

Mattucci

Moulton

Chandrashekar

et al. 2012

Journal of the Mechanical Behavior of Biomedical Materials

124

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Section: Research Objectives and Approachmentioning

confidence: 99%

Section: Development Of Average Curvesmentioning

confidence: 99%

Strain rate dependent properties of younger human cervical spine ligaments

Mattucci

Moulton

Chandrashekar

et al. 2012

Journal of the Mechanical Behavior of Biomedical Materials

124

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“…The overlapping of the laminae and of the spinous processes with the tensile connecting ligaments 13 constitutes a secondary posterior pillar for making it rigid and blocking the torsion and translation spinal movements. 8 The multidirectional¯exibility tests used for the intact lumbar L1/L2 or L2/L3 segments 14,15 and then for the two anatomic lumbar models show signi®cant increases of motion for the lumbar middle-column models compared to the lumbar central pillar models (Table 3).…”

Section: Discussionmentioning

confidence: 99%

The stabilizing axial spinal pillar in the lumbar spine

Sm¹

2002

Spinal Cord

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Study design: A theoretical model of spinal stability is proposed.Objective: To present a biomechanical study in vitro using¯exibility and loading tests of the normal lumbar spine and of two lumbar models of spinal stability in order to determine which of the lumbar middle-column model and the personal suggested model of lumbar central axial pillar is more resistant and stable. Setting: Hospital`Sf.Treime', Iasi, Romania. Methods: Twenty-three fresh human cadaveric lumbar spines were tested with¯exibility and loading tests of the intact lumbar functional units and of two types of spinal model specimens: 10 lumbar middle-column models and 13 lumbar central pillar model specimens. Parameters of vertebral motion and vertebral compression were compared to determine the dierences between the types of spinal models. Results: The¯exibility tests show a signi®cant increase in motion of the lumbar middlecolumn model specimens compared to the lumbar central pillar model specimens. The lumbar central pillar model specimens are three times more stable compared to the middle-column models. The compression tests show that the lumbar central axial pillar model specimens were more resistant, on average by 10% (30% maximum) compared to the other model. Conclusions: The lumbar model formed by the axial overlapping of the posterior half moon of vertebral body continued by the pedicles and the articular processes is more stable and more resistant compared to the middle-column model of the three-columns theory of Denis. In the lumbar spine this central axis spinal pillar is the structure of spinal stability and resistance, and I propose this central axial spinal pillar as the stabilizing structure for all the spine.

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“…1b), which give intrinsic stability to the spine, are shown in table 2 with their geometric and mechanical characteristics according with literature [23,24,[40][41][42]. Solid elements have been used for the discretization of bone, nucleus pulposus, annulus matrix and endplates, while bar elements have been used for annulus fibres, ligaments and muscles.…”

Section: Methodsmentioning

confidence: 99%

Biomechanical consideration for dorsal-lumbar and lumbar sagittal spine disorders

Bignardi

Ramieri

Costanzo

2009

Modelling in Medicine and Biology VIII

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Lower back pain is one of the most important socioeconomic diseases and one of the most important health care issues today. On average, 50-90% of the adult population suffers from lower back pain and lifetime prevalence of lower back pain is 65-80%. The causes of lower back pain often remain unclear and may vary from patient to patient. It is estimated that 75% of such cases are associated disorders of the rachis mean back (kyphosis) or front (lordosis) pathological deviations, irreducible in various measures, resulting from structural diskligament and vertebral alterations of various etiologies. Three numerical models of the dorsal-lumbar spine, respectively a physiological model, a ipolordotic model and a kyphotic model, have been realized considering bone, disks and ligaments with their specific mechanical characteristics. For the load and boundary conditions chosen, joint facets and intervertebral disk stresses and disk bulge have been compared for the three spine situations. When it has been possible, the obtained results have been validated with data available in literature regarding both experimental and computational studies. In conclusion it can be assumed that dorsal-lumbar and lumbar sagittal spine disorders can determine premature disks and joints alterations. In particular, it seems that dorsal-lumbar kyphosis, more than lumbar ipolordosis, can expose joint facets and disks to non physiological loads. In addition, if the genetic role of disk degeneration is acknowledged, it is probable that the correction, at a precocious age, of sagittal spine imbalance, can prevent or slacken the disk-joint lumbar-sacral degenerative phenomena. The obtained results agree with the clinical experience.

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Biomechanical properties of human lumbar spine ligaments

Cited by 293 publications

References 13 publications

Strain rate dependent properties of younger human cervical spine ligaments

Strain rate dependent properties of younger human cervical spine ligaments

The stabilizing axial spinal pillar in the lumbar spine

Biomechanical consideration for dorsal-lumbar and lumbar sagittal spine disorders

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