No idea regarding the cast and I have no inside knowledge on this inury I'm just speaking from what I remember in similar instances I guess. They usually stabilize the break with screws and a plate so that it can't be damaged further. Then it takes a few weeks for the incision to heal and yes I guess sometimes they have to cast it for games and practices.
And yes enought with the Paki slam. Everyone knows that in order for him to get significant time we are going to have to go through 3 rb's first. Is he as good as the first 3 guys no, but thats why he's 4th on the depth chart. At the very least he's someone I'm comfortable with in knowing what's going on in protection scheemes and knows the playbook which really goes a long way. He's a kid that has been pretty valuable on special teams in his career and has been nothing but a class act of the field.
It's funny how some 4th team walk on RB's get revered (Brownlee) and others get trashed. I guess it just goes to show that every group has a population of complete trash (even Hawkeyefans) within it.
EDIT
Im not calling you out Dexter