It isn't so much
broken, as muscle is
unlike bone and
does not fracture cleanly.
It will not heal completely,
when damaged, no matter
how well it is set.
Bone calcifies to mend itself,
and adds new minerals
and elements to make it stronger yet.
Muscle, however, turns to weaker ends
that lack its own elasticity.
It mends itself with collagen,
and becomes more prone to injury.