Collagen fibrils are the major component of ligament and tendon and affect the surrounding interstitial fluid flow. These parallel fibrils hold a considerable amount of water and have anisotropic mechanical properties (Frank et al., 1987). Fibril population and tissue porosity are non-uniformly distributed and contribute to the unique micro-hydrodynamics and electrokinetics of ligament and tendon (Frank et al., 1987; Chen et al., 1996). A poroelastic model is extended from a previous study (Chen and Vanderby, 1996) to describe the pore pressure, fluid velocity, and streaming potential under different loadings.

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