Effects of microstructure and water on the electrical potentials in bone induced by ultrasound irradiation

H. Tsuneda, S. Matsukawa, S. Takayanagi, K. Mizuno, T. Yanagitani, M. Matsukawa

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The healing mechanism of bone fractures by low intensity pulse ultrasound is yet to be fully understood. There have been many discussions regarding how the high frequency dynamic stress can stimulate numerous cell types through various pathways. As one possible initial process of this mechanism, we focus on the piezoelectricity of bone and demonstrate that bone can generate electrical potentials by ultrasound irradiation in the MHz range. We have fabricated ultrasonic bone transducers using bovine cortical bone as the piezoelectric device. The ultrasonically induced electrical potentials in the transducers change as a function of time during immersed ultrasonic pulse measurements and become stable when the bone is fully wet. In addition, the magnitude of the induced electrical potentials changes owing to the microstructure in the cortical bone. The potentials of transducers with haversian structure bone are higher than those of plexiform structure bone, which informs about the effects of bone microstructure on the piezoelectricity.

本文言語English
論文番号073704
ジャーナルApplied Physics Letters
106
7
DOI
出版ステータスPublished - 2015 2 16
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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