Cartilage Mechanical Properties
Cartilage Mechanical Properties - Related Videos
09:02
Characterization of Intra-Cartilage Transport Properties of Cationic Peptide Carriers
0 Views •
Cited by 22 •
2020
This protocol determines equilibrium uptake, depth of penetration and non-equilibrium diffusion rate for cationic peptide carriers in cartilage. Characterization of transport properties is critical for ensuring an effective biological response. These methods can be applied for designing an optimally charged drug carriers for targeting negatively charged tissues.
06:59
In Vivo Evaluation of the Mechanical and Viscoelastic Properties of the Rat Tongue
0 Views •
2017
We describe a surgical procedure in an anesthetized rat model for determining the muscle tone and viscoelastic properties of the tongue. The procedure involves specific stimulation of the hypoglossal nerves and application of passive Lissajous force/deformation curves to the muscle.
12:37
3D Hydrogel Scaffolds for Articular Chondrocyte Culture and Cartilage Generation
0 Views •
Cited by 38 •
2015
Cartilage repair represents an unmet medical challenge and cell-based approaches to engineer human articular cartilage are a promising solution. Here, we describe three-dimensional (3D) biomimetic hydrogels as an ideal tool for the expansion and maturation of human articular chondrocytes.
10:24
Quantifying the Mechanical Properties of the Endothelial Glycocalyx with Atomic Force Microscopy
0 Views •
Cited by 34 •
2013
The mechanical characteristics of endothelial glycocalyx were measured by indentation using micron sized spheres on AFM cantilevers. Endothelial cells were cultured in a custom chamber under physiological flow conditions to induce glycocalyx expression. Data were analyzed using a thin film model to determine the glycocalyx thickness and modulus.
02:44
Impact Indentation for Assessing the Mechanical Properties of a Mouse Brain Tissue
0 Views •
2025
Source: Canovic, E. P., et. al., Characterizing Multiscale Mechanical Properties of Brain Tissue Using Atomic Force Microscopy, Impact Indentation, and Rheometry. J. Vis. Exp. (2016)The video demonstrates using impact indentation to measure the mechanical properties of a hydrated mouse brain tissue, including stiffness, energy dissipation, and damping, through probe displacement and velocity analysis.
FAQs
Collagen fibers provide tensile restraint, helping the matrix resist stretching and deformation, while proteoglycans attract water and support resistance to compression. Their interaction allows cartilage to withstand different types of loading rather than relying on one structural component. This matrix organization is therefore central to interpreting how tissue composition relates to mechanical performance.
Water movement through the extracellular matrix contributes to cartilage’s time-dependent response. Under loading, fluid redistribution changes how the tissue deforms and recovers over time, producing viscoelastic behavior instead of an immediate, purely elastic response. Accounting for this behavior helps bioengineers evaluate how cartilage performs during changing or sustained mechanical conditions.
Compressive modulus describes resistance to compression, tensile response characterizes behavior when the tissue is stretched, and friction reflects how readily opposing surfaces slide against one another. Together, these measurements examine different aspects of joint function. Using more than one parameter gives a broader mechanical profile than relying on a single stiffness value.
Comparing measurements such as compressive modulus, tensile response, and friction can reveal changes in tissue performance associated with degeneration. A shift in one or more of these parameters indicates that the cartilage no longer responds mechanically like the reference tissue. Such comparisons help researchers characterize degeneration through measurable functional changes rather than structure alone.
A basic mechanical evaluation can consider compressive modulus, tensile response, and friction, while also recognizing the tissue’s time-dependent behavior. These measurements assess resistance to compression, response to stretching, surface sliding, and viscoelastic performance. Selecting complementary parameters allows researchers to compare native cartilage with engineered tissues or other candidate materials.
Bioengineers use mechanical measurements to compare engineered cartilage, biomaterials, or joint replacements with native tissue. The results indicate whether a design reproduces relevant load-bearing and protective functions, including compression, tension, and frictional behavior. This comparison supports iterative development of replacements and constructs intended to more closely reproduce physiological joint performance.