The speed of sound through trabecular bone predicted by Biot theory

Abstract Cancellous bone is a highly porous material filled with fluid. The mechanical properties of cancellous bone determine whether the bone is normal or osteoporotic. Wave propagation can be used to measure the elastic constants of cancellous bone. Recently, poroelasticity theory has been used t...

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Veröffentlicht in:Journal of biomechanics 2012-02, Vol.45 (4), p.716-718
Hauptverfasser: Yoon, Young June, Chung, Jae-Pil, Bae, Chul-Soo, Han, Seog-Young
Format: Artikel
Sprache:eng
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Zusammenfassung:Abstract Cancellous bone is a highly porous material filled with fluid. The mechanical properties of cancellous bone determine whether the bone is normal or osteoporotic. Wave propagation can be used to measure the elastic constants of cancellous bone. Recently, poroelasticity theory has been used to predict the elastic constants of cancellous bone from the wave velocities. In this study, it is shown that the fast wave, predicted by the Biot theory, corresponds to the wave penetrating the trabeculae, while the slow wave is determined by the interaction between the trabeculae and the fluid. The trabecular shape does not affect the wave velocity significantly when using the variable, which is determined by the microstructure, and the slow wave velocity decreases after the porosity reaches 80%.
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2011.12.007