My brother broke both of his legs in the Army Ranger parachuting school a few years ago. He landed wrong because of weird instructions and heard the crack but after they patted him down and told him he was good he spent 2 weeks trying to walk it off.

Finally the pain got to be too much and they took him in for x-rays. Needed screws all throughout his legs and 2 months to heal.

Now he's fine, goes out for daily runs, still in the military (but failed the Ranger class because he couldn't finish the jump training) and is mostly upset about not being a ranger.