Biomechanical properties of human articular cartilage under compressive loads. 2004

Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
Laboratory of Biological Structure Mechanics, Department of Structural Engineering and Department of Bioengineering, Politecnico di Milano, Italy. federica.boschetti@polimi.it

The function of articular cartilage is to support and distribute loads and to provide lubrication in the diarthrodial joints. Cartilage function is described by proper mechanical and rheological properties, strain and depth-dependent, which are not completely assessed. Unconfined and confined compression are commonly used to evaluate the Young's modulus (E) and the aggregate modulus (H(A)), respectively. The Poisson's ratio (nu) can be calculated indirectly from the equilibrium compression data, or using the biphasic indentation technique; it has recently been optically evaluated by using video microscopy during unconfined compression. The transient response of articular cartilage during confined compression depends on its permeability k; a constant value of k can be easily identified by a simple analytical model of confined compression tests, whereas more complex models or direct measurements (permeation tests) are needed to study the permeability dependence on deformation. A poroelastic finite element model of articular cartilage was developed for this purpose. The elastic parameters (E,nu) of the model were evaluated performing unconfined compression creep tests on human articular cartilage disks, whereas k was identified from the confined test response. Our combined experimental and computational method can be used to identify the parameters that define the permeability dependence on deformation, as a function of depth from articular surface.

UI MeSH Term Description Entries
D008297 Male Males
D008954 Models, Biological Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment. Biological Model,Biological Models,Model, Biological,Models, Biologic,Biologic Model,Biologic Models,Model, Biologic
D002358 Cartilage, Articular A protective layer of firm, flexible cartilage over the articulating ends of bones. It provides a smooth surface for joint movement, protecting the ends of long bones from wear at points of contact. Articular Cartilage,Articular Cartilages,Cartilages, Articular
D004548 Elasticity Resistance and recovery from distortion of shape.
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000222 Adaptation, Physiological The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT. Adaptation, Physiologic,Adaptations, Physiologic,Adaptations, Physiological,Adaptive Plasticity,Phenotypic Plasticity,Physiological Adaptation,Physiologic Adaptation,Physiologic Adaptations,Physiological Adaptations,Plasticity, Adaptive,Plasticity, Phenotypic
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000369 Aged, 80 and over Persons 80 years of age and older. Oldest Old
D012212 Rheology The study of the deformation and flow of matter, usually liquids or fluids, and of the plastic flow of solids. The concept covers consistency, dilatancy, liquefaction, resistance to flow, shearing, thixotrophy, and VISCOSITY. Flowmetry,Velocimetry,Velocimetries

Related Publications

Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 2006, American journal of rhinology,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 1994, Bio-medical materials and engineering,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 2003, Zentralblatt fur Chirurgie,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 2003, Biorheology,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 2008, Biorheology,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 2015, Journal of biomechanics,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
March 2000, Artificial organs,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
January 1996, Biorheology,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
August 2014, Journal of the mechanical behavior of biomedical materials,
Federica Boschetti, and Giancarlo Pennati, and Francesca Gervaso, and Giuseppe M Peretti, and Gabriele Dubini
November 2001, Journal of orthopaedic research : official publication of the Orthopaedic Research Society,
Copied contents to your clipboard!