Spatial distribution of acoustic and elastic properties of human femoral cortical bone

Bensamoun, Sabine F.; Tho, M.C. Ho Ba; Luu, Son; Gherbezza, Jean-Marc; Belleval, Jean-François de

doi:10.1016/j.jbiomech.2003.09.013

Cited by 67 publications

(40 citation statements)

References 12 publications

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“…The estimated CD and P values are in the range of histomorphometric values reported by Wachter et al 36,37 However, a direct comparison was not possible, because these structural parameters are known to vary considerably even within a single femur at different anatomical locations. 22 Moreover, the different values obtained at 50 and 100 MHz suggest a remaining dependence of the estimated values on the selection of the impedance threshold level. The value used in this study (4 Mrayl) presumably failed to exclude the smallest channels and led to slightly reduced channel size estimations.…”

Section: Discussionmentioning

confidence: 99%

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Frequency and resolution dependence of the anisotropic impedance estimation in cortical bone using time‐resolved scanning acoustic microscopy

Raum

Reisshauer

Brandt

2004

J Biomedical Materials Res

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The influences of frequency and spatial resolution on the anisotropic impedance estimation of cortical bone was investigated in the frequency range 25-100 MHz. A set of spherically focused transducers provided a spatial resolution in the range from 150 down to about 20 mum. Four embedded cortical bone samples (two male, two female, two donors aged <30 years, two donors aged >70 years) were cut with different orientations relative to the long axis of the femur (0-90 degrees ). From each section, impedance maps were acquired in the C-scan mode. Histogram evaluations showed a similar angular dependence with a characteristic off-axis maximum of the estimated impedance for all samples and frequencies. The impedance values obtained with the 25-MHz transducer were significantly lower than those obtained with the 50- and 100-MHz transducers. Morphological parameters of the macrostructure, for example, size and distribution of the haversian channels and the resulting porosity, were estimated from the high-resolution acoustic images. These structures appeared to have a significant influence on the measured properties of the bone matrix for the low-frequency and low-aperture measurements.

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Section: Discussionmentioning

confidence: 99%

“…For low frequencies (e.g., 5 MHz), the spatial distribution of sound velocity can be assessed in thin sections of human femoral bone. 22 However, because of the limited resolution at this frequency, the sound velocity is affected by structural parameters, for example, pore size and porosity.…”

Section: Introductionmentioning

confidence: 99%

Frequency and resolution dependence of the anisotropic impedance estimation in cortical bone using time‐resolved scanning acoustic microscopy

Raum

Reisshauer

Brandt

2004

J Biomedical Materials Res

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“…60 (2009) Thermal effects in orthotropic porous elastic beams 139 be assumed to be transversely isotropic. However, subsequent investigations have confirmed that in reality, orthotropy is the case that most closely describes mechanical anisotropy of bone [11,13]. The cancellous bone is considered as a porous material.…”

Section: Introductionmentioning

confidence: 91%

“…The present paper is concerned with the extension and bending of orthotropic porous cylinders subjected to a plane temperature field. This work is motivated by the recent interest in the using of the orthotropic elastic solid as model for bones (see, e.g., [10][11][12][13]) and for various engineering materials (see, e.g., [14][15][16][17]). The bone tissue is typically described as an orthotropic elastic material.…”

Section: Introductionmentioning

confidence: 99%

Thermal effects in orthotropic porous elastic beams

Iaşan

2008

Z. angew. Math. Phys.

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This paper is concerned with the linear theory of anisotropic porous elastic bodies. The extension and bending of orthotropic porous elastic cylinders subjected to a plane temperature field is investigated. The work is motivated by the recent interest in the using of the orthotropic porous elastic solid as model for bones and various engineering materials. First, the thermoelastic deformation of inhomogeneous beams whose constitutive coefficients are independent of the axial coordinate is studied. Then, the extension and bending effects in orthotropic cylinders reinforced by longitudinal rods are investigated. The three-dimensional problem is reduced to the study of two-dimensional problems. The method is used to solve the problem of an orthotropic porous circular cylinder with a special kind of inhomogeneity. (2000). 74E10, 74E05, 74F05, 74F10, 74G05, 74K10, 74L15. Mathematics Subject Classification

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“…Sensitivity of ultrasonic propagation parameters have been linked to changes of important properties defining bone quality, including elastic properties [18], [19] and thickness [20], [21]. Although several studies have demonstrated topographical differences of ultrasound velocity in long bones and a decreasing slope from diaphysis toward epiphyses [22], [23], these regularities have not been properly interpreted, nor have they been exploited as a diagnostic feature. Attempts to use shear and surface waves for mapping ultrasonic properties were done using the critical-angle reflectometry [24].…”

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confidence: 99%

Topography of acoustical properties of long bones: from biomechanical studies to bone health assessment

Tatarinov

Sarvazyan

2008

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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The article presents a retrospective view on the assessment of long bones condition using topographical patterns of the acoustic properties. The application of ultrasonic point-contact transducers with exponential waveguides on a short acoustic base for detailed measurements in human long bones by the surface transmission was initiated during the 1980s in Latvia. The guided wave velocity was mapped on the surface of the long bones and the topographical patterns reflected the biomechanical peculiarities. Axial velocity profiles obtained in vivo by measurements along the medial surface of tibia varied due to aging, hypokinesia, and physical training. The method has been advanced at Artann Laboratories (West Trenton, NJ) by the introduction of multifrequency data acquisition and axial scanning. The model studies carried out on synthetic phantoms and in bone specimens confirmed the potential to evaluate separately changes of the bone material properties and of the cortical thickness by multifrequency acoustic measurements at the 0.1 to 1 MHz band. The bone ultrasonic scanner (BUSS) is an axial mode ultrasonometer developed to depict the acoustic profile of bone that will detect the onset of bone atrophy as a spatial process. Clinical trials demonstrated a high sensitivity of BUSS to osteoporosis and the capability to assess early stage of osteopenia.

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Spatial distribution of acoustic and elastic properties of human femoral cortical bone

Cited by 67 publications

References 12 publications

Frequency and resolution dependence of the anisotropic impedance estimation in cortical bone using time‐resolved scanning acoustic microscopy

Frequency and resolution dependence of the anisotropic impedance estimation in cortical bone using time‐resolved scanning acoustic microscopy

Thermal effects in orthotropic porous elastic beams

Topography of acoustical properties of long bones: from biomechanical studies to bone health assessment

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