Articular cartilage, which is composed with a solid phase of collagen fibers and proteoglycan and a pore fluid phase, can be depicted with two-phase porous medium model based on mixture theory.

• 关节软骨为一由骨胶原和蛋白聚糖固体相和孔隙流体相组成的多孔材料,其可以用基于混合物理论的两相多孔介质模型准确描述。