title: 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 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%.
authors.affiliation: Division of Mechanical Engineering, Hanyang University, Republic of Korea. yoon.youngjune@gmail.com
authors.forename: Young June
authors.initials: YJ
authors.lastname: Yoon
authors.forename: Jae-Pil
authors.initials: JP
authors.lastname: Chung
authors.forename: Chul-Soo
authors.initials: CS
authors.lastname: Bae
authors.forename: Seog-Young
authors.initials: SY
authors.lastname: Han
mesh_terms: D000818:Animals; D001842:Bone and Bones; D004548:Elasticity; D006801:Humans; D008962:Models, Theoretical; D010024:Osteoporosis; D016062:Porosity; D013016:Sound