P020 Bending properties of cranial bone segments of new-born children

Jans, Geert; Audekercke, Remy Van; Sloten, J. Vander; Gobin, Robert; Perre, Georges Van der; Mommaerts, Maurice Y.

doi:10.1016/s0021-9290(98)80132-2

Cited by 10 publications

(4 citation statements)

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“…After 3 h, the silicone replica was taken from the press and separated from the mould. Hemispherical PCTFE pins of 3 mm curvature radius were used as the Young’s modulus was close to that of the hard palate bone elastic modulus (Jans et al. , 1998).…”

Section: Methodsmentioning

confidence: 99%

Influence of emulsion composition on lubrication capacity and texture perception

Bellamy

Godinot

Mischler

et al. 2009

Int J of Food Sci Tech

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The role of fat content and type of surfactant for oral friction processes and texture perception of oil-inwater emulsions was assessed. Emulsions at 22% and 33% fat content containing either sodium caseinate or a sucrose ester as emulsifier were compared with viscosity-adapted aqueous solutions of dextran using both sensory evaluation and friction coefficient measurements on a tongue-palate contact model. The impact of saliva on the emulsion droplet size distribution was studied using tribology, differential interference contrast microscopy and light diffraction measurements. Emulsions at 33% and the corresponding iso-viscous aqueous solutions were discriminated in the sensory experiment whereas emulsions at 22% were not. Friction was significantly different for emulsions at 33% and the corresponding iso-viscous aqueous solutions. The difference was not significant for emulsions with 22% fat level when compared with the iso-viscous aqueous solutions. Saliva significantly decreased the friction coefficient of emulsions depending on the surfactant and amount of fat used.

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Section: Methodsmentioning

confidence: 99%

Influence of emulsion composition on lubrication capacity and texture perception

Bellamy

Godinot

Mischler

et al. 2009

Int J of Food Sci Tech

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“…Little reference data is available on young bone mechanical behavior, especially on children's cortical bone. Several papers study mechanical properties of children's bone by uniaxial bending (Currey and Butler, 1975;Jans et al, 1998;Davis et al, 2012;Agnew et al, 2013;Berteau et al, 2013;C. I. Albert et al, 2013;Albert et al, 2014), compression (McPherson et al, 2007Ohman et al, 2011) or ultrasonic characterization (Berteau et al, 2012(Berteau et al, , 2013.…”

Section: Introductionmentioning

confidence: 99%

Analyzing the anisotropic Hooke׳s law for children׳s cortical bone

Lefevre

Lasaygues

Baron

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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Child cortical bone tissue is rarely studied because of the difficulty of obtaining samples. Yet the preparation and ultrasonic characterization of the small samples available, while challenging, is one of the most promising ways of obtaining information on the mechanical behavior of non-pathological children׳s bone. We investigated children׳s cortical bone obtained from chirurgical waste. 22 fibula or femur samples from 21 children (1-18 years old, mean age: 9.7±5.8 years old) were compared to 16 fibula samples from 16 elderly patients (50-95 years old, mean age: 76.2±13.5 years old). Stiffness coefficients were evaluated via an ultrasonic method and anisotropy ratios were calculated as the ratio of C33/C11, C33/C22 and C11/C22. Stiffness coefficients were highly correlated with age in children (R>0.56, p<0.01). No significant difference was found between C11 and C22 for either adult or child bone (p>0.5), nor between C44 and C55 (p>0.5). We observe a transverse isotropy with C33>C22=C11>C44C55>C66. For both groups, we found no correlation between age and anisotropy ratios. This study offers the first complete analysis of stiffness coefficients in the three orthogonal bone axes in children, giving some indication of how bone anisotropy is related to age. Future perspectives include studying the effect of the structure and composition of bone on its mechanical behavior.

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“…This is mainly due to the difficulties in validating such models against experimental data. However, child head material properties have been studied and are available in the literature [9][10][11][12]. In the present paper, we developed a 6-month-old child head model and simulated a vigorous shake and an inflicted impact, defined as the terminal portion of a vigorous shake, to study their consequences in terms of intracerebral pressure, shearing stress and relative motion of brain and skull.…”

Section: Introductionmentioning

confidence: 99%

Finite element analysis of impact and shaking inflicted to a child

et al. 2006

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This study compares a vigorous shaking and an inflicted impact, defined as the terminal portion of a vigorous shaking, using a finite element model of a 6-month-old child head. Whereas the calculated values in terms of shearing stress and brain pressure remain different and corroborate the previous studies based on angular and linear velocity and acceleration, the calculated relative brain and skull motions that can be considered at the origin of a subdural haematoma show similar results for the two simulated events. Finite element methods appear as an emerging tool in the study of the biomechanics of head injuries in children.

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P020 Bending properties of cranial bone segments of new-born children

Cited by 10 publications

References 0 publications

Influence of emulsion composition on lubrication capacity and texture perception

Influence of emulsion composition on lubrication capacity and texture perception

Analyzing the anisotropic Hooke׳s law for children׳s cortical bone

Finite element analysis of impact and shaking inflicted to a child

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