TY - GEN
T1 - Bone elastometric measurements by ultrasound reflectometry
T2 - ASME 2000 International Mechanical Engineering Congress and Exposition, IMECE 2000
AU - Mehta, Shreefal S.
AU - Smith, Billy
AU - Lewis, Matthew A.
AU - Antich, Peter P.
AU - Richer, Edmond
N1 - Publisher Copyright:
© 2000 by ASME
PY - 2000
Y1 - 2000
N2 - Bone mechanical properties are strongly dependent on orientation and optimally adapted to the directional stresses induced by load bearing and muscular activity. Spatial and directional homogeneity and a slow rate of change of material mechanical properties are commonly assumed in the literature. The assumptions are based on limitations of widespread diagnostic techniques but are contradicted by results from several established techniques, including ultrasound reflectometry. A device based on the ultrasound reflectometry technique measures the mechanical elasticity of bone noninvasively at multiple sites and orientations, making it possible to carry out longitudinal studies at any chosen location in vivo. In vivo elastometric measurements over the length of a tibia were obtained with this device, demonstrating quantitatively for the first time the spatial and directional heterogeneity of bone material properties in vivo. Clinical observations made on two subjects also suggest that bone does exhibit rapid changes in response to altered activity levels.
AB - Bone mechanical properties are strongly dependent on orientation and optimally adapted to the directional stresses induced by load bearing and muscular activity. Spatial and directional homogeneity and a slow rate of change of material mechanical properties are commonly assumed in the literature. The assumptions are based on limitations of widespread diagnostic techniques but are contradicted by results from several established techniques, including ultrasound reflectometry. A device based on the ultrasound reflectometry technique measures the mechanical elasticity of bone noninvasively at multiple sites and orientations, making it possible to carry out longitudinal studies at any chosen location in vivo. In vivo elastometric measurements over the length of a tibia were obtained with this device, demonstrating quantitatively for the first time the spatial and directional heterogeneity of bone material properties in vivo. Clinical observations made on two subjects also suggest that bone does exhibit rapid changes in response to altered activity levels.
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U2 - 10.1115/IMECE2000-2283
DO - 10.1115/IMECE2000-2283
M3 - Conference contribution
AN - SCOPUS:85119859216
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 49
EP - 54
BT - Dynamic Systems and Control
PB - American Society of Mechanical Engineers (ASME)
Y2 - 5 November 2000 through 10 November 2000
ER -