I head Feynmann did not manage to find an explaination why you cannot break spaghetti properly.

Today I saw this paper about how flexurial waves explains why you destroy spaghetti if you try to break them: Article Controlling fracture cascades through twisting and quenching

In case of something smaller, like fiber tracts in the brain https://en.wikipedia.org/wiki/Nerve_tract , do flexurial waves have any impact in axonal fiber bundles during traumatic brain injuries?