Last week, when Cleveland Browns quarterback Josh McCown ran all the way through the artificial surface on the sideline of the Edward Jones Dome, slipped on the concrete and crashed into the wall, some found it funny.

Never mind that McCown injured his shoulder on the play. He was nonetheless mocked on ESPN's "C'Mon, Man" segment.

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Well, nobody is laughing about Reggie Bush's slip on Sunday. Or at least they shouldn't be.

As FOX Sports first reported, the San Francisco 49ers believe Bush suffered a torn ACL when he lost his footing on the concrete. Bush will have an MRI to confirm, though it's believed his season is over. Bush will be 31 in March, so it's fair to wonder if this is an injury that could end his career.

If so, that's no way to go out.

The Rams have to take a look at that concrete near the wall and possibly address the situation. The NFL Players Association will be looking into the issue this week. And yes, the Rams could address it by moving to Los Angeles after the season, but there are at least four more home games left in St. Louis before that potentially occurs.