Skip to Main content Skip to Navigation
Conference papers

Children cortical bone characterisation: the ultrasonic issue

Abstract : Nowadays there is a strong interest in the characterization of the growing process of children bone. Recent works considered osteoporosis as a pediatric disease with geriatric consequences and children are concerned by specific infantile osteo-pathologies. However, few mechanical properties of cortical growing bone are available in literature and do not yield to gold standards. The goal of this study is to evaluate the validity of ultrasonic characterization of elastic properties for growing bone. Nine surgery wastes from fibula auto-transplants (5 to 16 years old children with accordance of French ethical committee) are included in a two-step method process. A non-destructive ultrasonic evaluation (7 and 10 MHz) yields to acoustic Young’s modulus (Ea) and a micro-three point bending test yields to Young’s modulus (E). Ultrasonic testing provides an average Ea of 15.2 GPa (+/- 2.9) at 7 MHz and 15.49 GPa (+/- 3.95) at 10 MHz, and micro-flexion an average E of 10.13 GPa (+/- 5.29). A linear correlation between Ea and E is found (R2 value is 0.78 at 7 MHz and 0.79 at 10 MHz). To our knowledge, this is the highest R2 between destructive and non-destructive method found in literature for human cortical bone.
Complete list of metadatas

Cited literature [16 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00810619
Contributor : Hal System <>
Submitted on : Monday, April 23, 2012 - 10:00:00 AM
Last modification on : Thursday, January 23, 2020 - 6:22:13 PM
Long-term archiving on: : Sunday, December 18, 2016 - 2:29:39 PM

File

hal-00810619.pdf
Publisher files allowed on an open archive

Identifiers

  • HAL Id : hal-00810619, version 1

Citation

Jean-Philippe Berteau, Cécile Baron, Martine Pithioux, Patrick Chabrand, Philippe Lasaygues. Children cortical bone characterisation: the ultrasonic issue. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810619⟩

Share

Metrics

Record views

238

Files downloads

247