Meniscus and cartilage exhibit distinct intra-tissue strain distributions under unconfined compression
نویسندگان
چکیده
منابع مشابه
Strain-rate dependent stiffness of articular cartilage in unconfined compression.
The stiffness of articular cartilage is a nonlinear function of the strain amplitude and strain rate as well as the loading history, as a consequence of the flow of interstitial water and the stiffening of the collagen fibril network. This paper presents a full investigation of the interplay between the fluid kinetics and fibril stiffening of unconfined cartilage disks by analyzing over 200 cas...
متن کاملAn automated approach for direct measurement of two-dimensional strain distributions within articular cartilage under unconfined compression.
An automated approachfor measuring in situ two-dimensional strain fields was developed and validated for its application to cartilage mechanics. This approach combines video microscopy, optimized digital image correlation (DIC), thin-plate spline smoothing (TPSS) and generalized cross-validation (GCV) techniques to achieve the desired efficiency and accuracy. Results demonstrate that sub-pixel ...
متن کاملHeterogeneous three-dimensional strain fields during unconfined cyclic compression in bovine articular cartilage explants.
Articular cartilage provides critical load-bearing and tribological properties to the normal function of diarthrodial joints. The unique properties of cartilage, as well as heterogeneous deformations during mechanical compression, are due to the nonuniform microstructural organization of tissue components such as collagens and proteoglycans. A new cartilage deformation by tag registration (CDTR...
متن کاملFibril Stiffening Accounts for Strain-dependent Stiffness of Articular Cartilage in Unconfined Compression
Introduction: Articular cartilage is typically subjected to physiological loading at high strain rates. The mechanical response to this type of load is mainly governed by interactions among three material phases: collagen fibrils, proteoglycan matrix and water containing diffusible ions. Previous model studies, which have adopted the same constitutive laws for the fibrils and the proteoglycans,...
متن کاملDepth-dependent Relaxation of Articular Cartilage in Unconfined Compression
INTRODUCTION Articular cartilage (AC) is an inhomogeneous, anisotropic and multiphasic composite. Depth-dependent strain distribution in full thickness AC has previously been investigated with optical methods (Guilak, 1995; Schinagl, 1997; Wang, 2003). Depth and time-dependent compressive strain has been predicted with theoretical models (Li, 2000; Wang, 2001). Most recently, Electronic Speckle...
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ژورنال
عنوان ژورنال: Osteoarthritis and Cartilage
سال: 2010
ISSN: 1063-4584
DOI: 10.1016/j.joca.2010.05.020