0916 コラーゲン線維微細ネットワーク構造を考慮した軟骨の力学モデル(S04-1 関節のバイオメカニズム(1),S04 関節のバイオメカニズム)

概要

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Articular cartilage has an important role in the mechanical function of diarthrodial joints, and the dysfunction of cartilage harms patient's daily living seriously. The microstructure of cartilage strongly related to the mechanical behavior. To consider microsturucture of cartilage is important to estimate mechanical behavior of cartilage. Cartilage is a multi-phasic material of permeable composite comprised of a solid matrix and interstitial fluid. The solid matrix is mainly composed of proteoglycans and collagen fibres and chondrocytes, exhibiting different structure in accordance with the cartilage depth. In this study, we focus on material properties affected by anisotropic structure of collagen fiber and/or chondrocytes. We constructed a model of cartilage with the use of an elasticity tensor depend on the change of microsturucture of cartilage. An inquest of the anisotropic and inhomogeneous mechanical behavior of cartilage was numerically preformed through finite element formulation under the basic conditions of the confined/unconfined compression.
社団法人日本機械学会の論文
2007-09-07