Excessive plantar pressure and tissue strain on the insensate foot may lead to ulceration.
Tendon fascicles were pulled and fixed within the linear region (12% local tissue strain) at multiple strain rates.
Model variations showed that peak local tissue strain increased as the proximal aponeurosis width narrowed and the muscle width widened.
Ground reaction forces from walking result in stress (pressure) and soft tissue strain at the plantar aspect of the foot.
This is the first study to quantify sub-dermal tissue strain and stress distributions in sitting humans, in vivo.
We measure the deformation of the mineralized collagen fibrils, and the nano-mechanical parameters including effective fibril modulus and fibril to tissue strain ratio.
We concluded that the collagen fibrils underwent significantly greater recruitment (fibril strain relative to global tissue strain) at higher strain rates.
In addition, centroid-to-centroid distances of adjacent cell nuclei within each image were measured and used to calculate local tissue strain.
This study investigated the effectiveness of different shaped silicone insoles on the reduction of both plantar soft tissue strain and pressure.
There was a weak (r2=0.34) but significant (p<0.01) correlation between local tissue strain and cell nucleus strain in the x axis.
Furthermore, the simulation results indicate that the double air bubble contact will result in smaller volumetric tissue strain than the single air bubble contact for the same force.
