Determining Tension-Compression Nonlinear Mechanical Properties of Articular Cartilage from Indentation Testing.

ABSTRACT: The indentation test is widely used to determine the in situ biomechanical properties of articular cartilage. The mechanical parameters estimated from the test depend on the constitutive model adopted to analyze the data. Similar to most connective tissues, the solid matrix of cartilage displays different mechanical properties under tension and compression, termed tension-compression nonlinearity (TCN). In this study, cartilage was modeled as a porous elastic material with either a conewise linear elastic matrix with cubic symmetry or a solid matrix reinforced by a continuous fiber distribution. Both models are commonly used to describe the TCN of cartilage. The roles of each mechanical property in determining the indentation response of cartilage were identified by finite element simulati

SUBMITTER: Chen X 

PROVIDER: S-EPMC4740278 | biostudies-literature | 2016 Apr

REPOSITORIES: biostudies-literature