Biphasic porous medium model based on mixture theory can be used to accurately depict the mechanical behavior of articular cartilage, and the permeability of articular cartilage is related to volume strain of solid phase.

• 摘要基于混合物理论的两相多孔介质模型可以准确描述关节软骨的力学行为，关节软骨的渗透率与固体相体积应变相关。