Yes, San Francisco 49ers RB Reggie Bush has had a problem with injuries this season, but couldn't this last one have been avoided? Bush was returning a punt, and had been forced out of bounds. He was attempting to slow down as he ran through the sideline. As he ran past the bench in the Edward Jones Dome, he managed to slip on the exposed concrete floor. If you are wearing cleats running on concrete, it will feel like ice. If the turf continued all the way to the wall, maybe Bush would have been able to stop before impacting the wall and injuring his knee.