FUNDAMENTALS OF FLUID TRANSPORT THROUGH CARTILAGE IN COMPRESSION
FUNDAMENTALS OF FLUID TRANSPORT THROUGH CARTILAGE IN COMPRESSION
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DOI：
10.1007/bf02371448
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发表时间：
1984-01-01
影响因子：
3.8
通讯作者：
MOW, VC
中科院分区：
文献类型：
--
作者：
KWAN, MK;LAI, WM;MOW, VC
本文描述了关节软骨在四种不同载荷配置下的流动模式和相关的粘弹性行为：1）受限压缩，2）无侧限压缩，3）在软骨层上恒定载荷跨度的平移抛物面牵引，4）在软骨层上周期性变化跨度的扩展抛物面牵引。简要总结了这些问题的公式和解决方案，并进行了讨论。对于前两种情况下，重点是在流动机制的差异引起所观察到的压缩粘弹性行为的组织。这两个基本解可以为解释更复杂的加载条件下的变形和流动模式的结果提供依据。最后两种情况下模拟两个主要的几何特征的关节。关节面处的液体流出模式取决于载荷的运动学以及组织的固有材料特性：固体基质的模量和渗透性。控制压缩中组织的粘弹性行为的主要机制由流体阻力的相对大小和有机固体基质的固有刚度决定。
This paper describes the flow patterns and related viscoelastic behaviors of articular cartilage under four different loading configurations: 1) confined compression, 2) unconfined compression, 3) translating parabolic surface traction of constant loading span over a cartilage layer, and 4) spreading parabolic surface traction of periodically varying span on a cartilage layer. Brief summaries of formulations and solutions of these problems are given and discussed. For the first two cases, emphasis is given to the differences in the flow mechanisms giving rise to the observed compressive viscoelastic behavior of the tissue. These two fundamental solutions can provide a basis for interpreting the results of the deformation and flow patterns obtained from more complicated loading configurations. The last two cases simulate two main geometric features of joint articulations. Fluid efflux patterns at the articulating surface depend on the kinematics of loading as well as the intrinsic material properties of the tissue: the moduli and permeability of the solid matrix. The predominant mechanism controlling the viscoelastic behavior of the tissue in compression is determined by the relative magnitude of the fluid drag and the intrinsic stiffness of the organic solid matrix.