Previous studies in healing ligament have shown that disruption of the medial collateral ligament (MCL) results in substantial reduction in mechanical properties which does not return to normal after long periods of healing [ 47].
31 Mendiguchia et al 32 examined the effects of an acute hamstring strain injury on sprinting performance, and mechanical properties of sprint running at the time of return to sport and 2 months later.
As complete healing means, for both patient and parents, the ability to return to earlier activity before diagnosis, the mechanical properties of bone need to be fully recovered.
However, such a return to base-line levels of the mechanical properties can also be assumed when static stretch is practiced in recreation and competitive activities due to similar time frames (5 10 min) from stretching to the actual task.
Nanomembranes, with mechanical properties of typical sheets, can be bent, rolled, and twisted, to return to their original shape, while maintaining their single-crystal nature.
In addition, the function and the mechanical properties of tendon have not been evaluated to see if they have returned to normal with rest.
Lyras and colleagues [ 48] found a significant improvement in the mechanical properties of the regenerated tendon in the PRP-treated group at 14 days, returning to baseline at 28 days, concluding that PRP has a strong effect in the early phases of tendon healing.
The mechanical properties are remarkable.
Later, after returning to Cambridge and his laboratory in 1941, Dr. Perutz was called upon to help with the war by joining a secret effort, called Project Habbakuk after a Hebrew prophet, involving the mechanical properties of ice.
Mechanical properties also relate to their first potential practical applications.
