| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jurvelin, J. S.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2017Tissue viscoelasticity is related to tissue composition but may not fully predict the apparent-level viscoelasticity in human trabecular bone – an experimental and finite element studycitations
- 2014Deformation of articular cartilage during static loading of a knee joint - experimental and finite element analysiscitations
- 2007Effect of human trabecular bone composition on its electrical propertiescitations
- 2006Interrelationships between electrical properties and microstructure of human trabecular bonecitations
- 2006T2 relaxation time mapping reveals age- and species-related diversity of collagen network architecture in articular cartilagecitations
- 2005Prediction of mechanical properties of human trabecular bone by electrical measurementscitations
- 2003Electrical and dielectric properties of bovine trabecular bone - Relationships with mechanical properties and mineral densitycitations
- 2002Ultrasonic characterization of articular cartilage
- 2002Comparison of the equilibrium response of articular cartilage in unconfined compression, confined compression and indentationcitations
Places of action
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article
Interrelationships between electrical properties and microstructure of human trabecular bone
Abstract
Microstructural changes, such as reduction of trabecular thickness and number, are characteristic signs of osteoporosis leading to diminished bone strength. Electrical and dielectric parameters might provide diagnostically valuable information on trabecular bone microstructure not extractable from bone mineral density measurements. In this study, structural properties of human trabecular bone samples (n = 26) harvested from the distal femur and proximal tibia were investigated using the computed microtomography (microCT) technique. Quantitative parameters, e.g. structural model index (SMI) or trabecular bone volume fraction (BV/TV), were calculated. In addition, the samples were examined electrically over a wide frequency range (50 Hz-5 MHz) using a two-electrode impedance spectroscopy set-up. Relative permittivity, loss factor, conductivity, phase angle, specific impedance and dissipation factor were determined. Significant linear correlations were obtained between the dissipation factor and BV/TV or SMI (|r| ≥ 0.70, p < 0.01, n = 26). Principal component analyses, conducted on electrical and structural parameters, revealed that the high frequency principal component of the dissipation factor was significantly related to SMI (r = 0.72, p < 0.01, n = 26). The linear combination of high and low frequency relative permittivity predicted 73% of the variation in BV/TV. To conclude, electrical and dielectric parameters of trabecular bone, especially relative permittivity and dissipation factor, were significantly and specifically related to a trabecular microstructure as characterized with microCT. The data gathered in this study constitute a useful basis for theoretical and experimental work towards the development of impedance spectroscopy techniques for detection of bone quality in vitro or in special cases of open surgery.