Geometrical and material parameters to assess the macroscopic mechanical behaviour of fresh cranial bone samples

Auperrin, A.; Delille, Rémi; Lesueur, D.; Bruyère-Garnier, Karine; Masson, Catherine; Drazétic, P.

doi:10.1016/j.jbiomech.2013.10.060

Cited by 55 publications

(44 citation statements)

References 14 publications

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“…Another difference is that the spongy bone (diploe) in a real head is fluid filled while it is here only modeled as soft bone. In addition, the mechanical parameters depend on the position in the skull (McElhaney et al, 1970;Motherway et al, 2009;Auperrin et al, 2014), but in this study the values for the different parameters were independent of position. Moreover, the geometry of this model is obtained from one single head while the results are compared to average values from several heads.…”

Section: B Vibration Of the Cochleamentioning

confidence: 72%

“…Motherway et al (2009) reported the average elastic modulus of cranial bone, tested at dynamic speeds of 0.5, 1 and 2.5 m/s, to be 7.467±5.39 GPa, 10.777±9.38 GPa and 15.547±10.29 GPa. Auperrin et al (2014) measured the average Young's modulus as 3.81±1.55 GPa in the frontal bone, 5.00±3.12 GPa in the parietal bone, and 9.70±5.75 GPa in the temporal bone. Thus, according to the experimental data, the fresh human skull has a lower Young's modulus than used in previous head models.…”

Section: A Finite Element Model Of a Human Headmentioning

confidence: 99%

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The development of a whole-head human finite-element model for simulation of the transmission of bone-conducted sound

Chang

Kim

Stenfelt

2016

The Journal of the Acoustical Society of America

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A whole head finite element model for simulation of bone conducted (BC) sound transmission was developed. The geometry and structures were identified from cryosectional images of a female human head and eight different components were included in the model: cerebrospinal fluid, brain, three layers of bone, soft tissue, eye, and cartilage. The skull bone was modeled as a sandwich structure with an inner and outer layer of cortical bone and soft spongy bone (diploë) in between. The behavior of the finite element model was validated against experimental data of mechanical point impedance, vibration of the cochlear promontories, and transcranial BC sound transmission. The experimental data were obtained in both cadaver heads and live humans. The simulations showed multiple low-frequency resonances where the first was caused by rotation of the head and the second was close in frequency to average resonances obtained in cadaver heads. At higher frequencies, the simulation results of the impedance were within one standard deviation of the average experimental data. The acceleration response at the cochlear promontory was overall lower for the simulations compared with experiments but the overall tendencies were similar. Even if the current model cannot predict results in a specific individual, it can be used for understanding the characteristic of BC sound transmission in general.

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Section: B Vibration Of the Cochleamentioning

confidence: 72%

Section: A Finite Element Model Of a Human Headmentioning

confidence: 99%

The development of a whole-head human finite-element model for simulation of the transmission of bone-conducted sound

Chang

Kim

Stenfelt

2016

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…Several studies have examined the overall mechanical properties of the cranial vault as a whole by testing the mechanical properties of the vault using: tension test [5,16], compression test [5,7,9], triaxial compression test [7], shear test [7], torsion test [7], three point bending test [16][17][18][19][20][21][22], four point bending test [23],and simple-bending test [24]. However, the results of these studies represent only the overall mechanical properties of all three layers.…”

Section: Introductionmentioning

confidence: 99%

“…Many have studied the cortical material properties of the craniofacial complex in mammals, including humans [10,[14][15][16][17][18][19][20]], yet only a few studies have addressed the differences of mechanical properties between external and internal cortical plates. Evans and Lissner (1957) performed both tension and compression tests of the cortical layers of human parietal bone separately [21].…”

Section: Introductionmentioning

confidence: 99%

Material properties of the skull layers of the primate parietal bone: A single-subject study

Zapata

Wang

2020

PLoS ONE

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The outer cortical table of the parietal bone has been commonly used as a calvarial bone graft site for the craniofacial reconstruction. However, little is known about how removing the outer table may affect the function and structure of the inner table, and how the knowledge of the biomechanics and material properties of cortical bones will help the calvarial graft to better integrate into the biological and mechanical functions of its surrounding native tissues. In this study, it was hypothesized that there were significant differences in both density and material properties between inner and outer cortical plates in cranial bones. Twelve cylindrical specimens, including inner-outer layers, of cortical parietal bone of a female baboon were collected. Cortical thicknesses and densities were measured, and elastic properties were assessed using an ultrasonic technique. Results demonstrated remarkable difference in both thickness (t = 8.248, p �0.05) and density (t = 4.926, p�0.05) between inner and outer cortical paired samples. Orthotropic characteristics of the cortical plates were detected as well, these findings suggest that there are differences in biomechanical properties between two surfaces of cranial bones at both tissue and organ levels. How these differences are linked to the stress environments of the inner and outer cranial cortical layers awaits further studies. Further study will greatly enhance our ability to address questions derived from both morphological and craniofacial medicine fields about the development and biomechanics of craniofacial skeletons.

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“…Following the same line, Auperrin et al (2014) [9] tested a wider sample of skull specimens (351) from different cranial regions of 21 subjects under three point bending. The load applied was cyclic and remained within the elastic domain.…”

Section: Mechanical Behaviour Of the Skullmentioning

confidence: 99%

Assessment of head injury risk caused by impact using finite element models

Toledano¹

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Impact loading is the primary source of head injuries and can result in a range of trauma from mild to severe. Because of the multiple environments in which impact-related injuries can take place (automotive accidents, sports, accidental falls, violence), they can potentially affect the entire population regardless of their health conditions. Despite the increasing research effort on the understanding of head impact biomechanics, accurate prediction and prevention of traumatic injuries has not been completely achieved.

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Geometrical and material parameters to assess the macroscopic mechanical behaviour of fresh cranial bone samples

Cited by 55 publications

References 14 publications

The development of a whole-head human finite-element model for simulation of the transmission of bone-conducted sound

The development of a whole-head human finite-element model for simulation of the transmission of bone-conducted sound

Material properties of the skull layers of the primate parietal bone: A single-subject study

Assessment of head injury risk caused by impact using finite element models

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