Here, we evaluate the ability and accuracy of instrumented indentation to characterize the mechanical properties of both biological tissues and engineered scaffolds with interfaces between materials that contain significant changes in mechanical properties.
We analyzed the temporal changes in overall impedance values over time during the callus maturation process and investigated the relationship between changes in impedance values and the mechanical strength of the callus.
A model accounting for both changes in the interface structure between dispersed ZnO particles and the Au matrix captures the changes in mechanical and electrical resistivity.
They also developed an enhanced ability to detect changes in mechanical pressure, which made them more sensitive to water movements.
Changes in mechanical strength follow such microstructural changes.
Further, one cannot explicitly decouple changes in mechanical properties from changes in integrin binding.
45 However, changes in mechanical signaling such as unloading of mechanical force likely also plays a role (discussed below).
Changes in mechanical, biochemical or geometrical cell and tissue properties, in cell-cell signaling, in hormonal communication between distant parts of the organism, or even in behavioral traits can lead to new, potentially adaptive, phenotypes.
The remodelling of the hydroxyapatite in bones is possible when changes in pH and changes in mechanical stress appear [ 20– 20].
This suggests the beneficial effects of exercise result from local changes in mechanical strain alone.
