Where did you get the idea that Anzalone "has bad bones"? As far as his injury goes he has only suffered one broken bone. He had a couple of shoulder injuries in college that may not have been addressed successfully. Hopefully the surgery he had this time will have a more successful result.

And as for Kikaha, getting your ankle rolled doesn't mean that you have bad ankles. It simply means you suffered an unavoidable injury that could happen to virtually any NFL player in any game.