Retraction notice to “Experimental characterization of human cancellous bone via the first ultrasonic reflected wave – Application of Biot’s theory” [Applied Acoustics 163 (2020) 107237]

Recent in vitro studies have provided evidence of the propagation of two different longitudinal wave modes at ultrasonic frequencies in cancellous bone. The genesis of these two plane waves in fluid-saturated porous media is predicted by the poroelastic approach to wave propagation originally developed by Biot. However, wave velocity is usually analyzed as a function of bone mass density only; therefore, the influence of the cancellous bone microstructure over the wave velocity is not taken into account. In the present study, a descriptor of the microstructure is considered in Biot's theory. This model is used to evaluate the large experimental variability of both fast and slow wave velocities measured on randomly oriented human and bovine cancellous bone samples. The role of the anisotropic solid structure and fluid in the behavior of fast and slow wave velocities is examined. Experimental and theoretically predicted velocities are found in close agreement when analyzed as a function of both porosity and structural index. This model has the potential to be used to determine an acoustically derived structural index in cancellous bone.

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Ultrasonic characterization of human cancellous bone using the Biot theory: Inverse problem

The Journal of the Acoustical Society of America ◽

10.1121/1.2335420 ◽

2006 ◽

Vol 120 (4) ◽

pp. 1816-1824 ◽

Cited By ~ 54

Author(s):

N. Sebaa ◽

Z. E. A. Fellah ◽

M. Fellah ◽

E. Ogam ◽

A. Wirgin ◽

...

Keyword(s):

Inverse Problem ◽

Cancellous Bone ◽

Biot Theory ◽

Ultrasonic Characterization ◽

Human Cancellous Bone

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Preparation and Characterization of Porous Hydroxyapatite Block Using a HHP Method

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.309-311.1067 ◽

2006 ◽

Vol 309-311 ◽

pp. 1067-1070

Author(s):

Hee Song ◽

Soo Ryong Kim ◽

Hae Jung Kim ◽

Jong Hee Hwang ◽

Woo Teck Kwon ◽

...

Keyword(s):

Compressive Strength ◽

Calcium Carbonate ◽

Cancellous Bone ◽

Hot Pressing ◽

Starting Material ◽

Pressing Method ◽

Porous Hydroxyapatite ◽

Human Cancellous Bone ◽

Natural Coral

Porous hydroxyapatite has been prepared using a hydrothermal hot pressing method from calcium carbonate as a starting material. SEM result shows porous hydroxyapatite block is formed of three dimensionally inter-connected pores of 100-400µm in size, similar to human cancellous bone. At the ~ 70% porosity, the compressive strength was about 4MPa, which is similar to that of the commercially available porous hydroxyapatite derived from natural coral.

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