Hierarchical model for strain generalized streaming potential induced by the canalicular fluid flow of an osteon

作者：Wu, Xiao-Gang; Yu, Wei-Lun; Cen, Hai-Peng; Wang, Yan-Qin; Guo, Yuan; Chen, Wei-Yi^*

来源：Acta Mechanica Sinica, 2015, 31(1): 112-121.

DOI：10.1007/s10409-015-0002-z

• Canaliculi
• Streaming potential (SP)
• Poroelaticity
• Fluid flow

A hierarchical model is developed to predict the streaming potential (SP) in the canaliculi of a loaded osteon. Canaliculi are assumed to run straight across the osteon annular cylinder wall, while disregarding the effect of lacuna. SP is generalized by the canalicular fluid flow. Analytical solutions are obtained for the canalicular fluid velocity, pressure, and SP. Results demonstrate that SP amplitude (SPA) is proportional to the pressure difference, strain amplitude, frequency, and strain rate amplitude. However, the key loading factor governing SP is the strain rate, which is a representative loading parameter under the specific physiological state. Moreover, SPA is independent of canalicular length. This model links external loads to the canalicular fluid pressure, velocity, and SP, which can facilitate further understanding of the mechanotransduction and electromechanotransduction mechanisms of bones.

• 出版日期2015-2
• 单位太原理工大学