Abstract
A preliminary study is presented of the variability of the electric properties, in the axial, tangential and radial directions, as a function of position in the diaphysis of a femoral bovine bone. The measurements were carried out at three frequencies: 100 Hz, 10 kHz and 1 MHz. It is shown that both the conductivity and the permittivity exhibit significant variations along the diaphysis, and increase in magnitude towards the epiphyses. From this study, the variation of the electric properties cannot be clearly and directly ascribed to the longitudinal variability of the total volumetric fluid content of the bone. The results reflect the orthotropic nature of the electric properties, at any given location, and indicate a position-dependent tendency towards axis symmetry.
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Chakkalakal, D. A., Johnson, M. W., Harper, R. A. andKatz, J. L. (1980) Dielectric properties of fluid-saturated bone.IEEE Trans.,BME-27, 95–100.
Chakkalakal, D. A. andJohnson, M. W. (1981) Electrical properties of compact bone.Clin. Orthop., Rel. Res.,161, 133–145.
De Mercato, G., andGarcía-Sánchez, F. J. (1988) Dielectric properties of fluid-saturated bone: a comparison between diaphysis and epiphysis.Med. & Biol. Eng. & Comput.,26, 313–316.
Gong, J. K., Arnold, J. S. andCohn, S. H. (1964) Composition of trabecular and cortical bone.Anat. Rec.,149, 325–332.
Kosterich, J. D., Foster, K. R. andPollac, S. R. (1983) Dielectric permittivity and electrical conductivity of fluid saturated bone.IEEE Trans.,BME-30, 81–86.
Kosterich, J. D., Foster, K. R. andPollac, S. R. (1984) Dielectric properties of fluid saturated bone—the effect of variation in conductivity of immersion fluid.,BME-31, 369–373.
Lakes, R. S., Harper, R. A. andKatz, J. L. (1977) Dielectric relaxation in cortical bone.J. Appl. Phys.,48, 808–811.
Lipson, S. F. andKatz, J. L. (1984) The relationship between the elastic properties and microstructure of bovine cortical bone.J. Biomech.,17, 231–240.
Reddy, G. N. andSaha, S. (1984) Electrical and dielectric properties of wet bone as a function of frequency.IEEE Trans.,BME-31, 296–302.
Saha, S., Reddy, G. N. andAlbright, J. A. (1984) Factors affecting the measurement of bone impedance.Med. & Biol. Eng. & Comput.,22, 123–129.
Saha, S. andWilliams, P. A. (1986a) Electrical properties of cancellous bone.Fed. Proc.,45, 172.
Saha, S. andWilliams, P. A. (1986b) Electrical properties of human cancellous bone from distal femur. Trans. 12th Ann. Meet. Soc. Biomat.,9, 80.
Saha, S. andWilliams, P. A. (1986c) Electrical and dielectric properties of wet human cancellous bone as a function of frequency. InBiomedical engineering V: Recent developments.Saha, S. (Ed.), Pergamon Press, New York, 217–220.
Saha, S. andWilliams, P. A. (1988) Effect of various storage methods on the dielectric properties of compact bone.Med. & Biol. Eng. & Comput.,26, 199–202.
Saha, S. andWilliams, P. A. (1989) Electric and dielectric properties of wet human cancellous bone as a function of frequency.Ann. Biomed. Eng.,17, 143–158.
Singh, S. andSaha, S. (1984) Electrical properties of bone: a review.Clin. Orthop. Rel. Res.,186, 249–271.
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De Mercato, G., García Sánchez, F.J. Variation of the electric properties along the diaphysis of bovine femoral bone. Med. Biol. Eng. Comput. 29, 441–446 (1991). https://doi.org/10.1007/BF02441667
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DOI: https://doi.org/10.1007/BF02441667