X-rays on the Steelers' starting quarterback weren't immediately announced. Roethlisberger said he was unaware if the foot was broken.
Asked whether he would play Sunday against the Titans, Roethlisberger said, "I don't know. You know me, if I can be out there I'm going to be out there. That's so for next week, too."
It was just last season when Roethlisberger played through a broken bone in his right foot without being sidelined for a game.
"I casted up my foot for the last half of the year, so if we have to do it, I'll do it," he said.
Also, running back Rashard Mendenhall didn't return to the game after injuring his hamstring on a 3-yard touchdown run late in the third quarter of Sunday's loss at Houston.
Here are some injuries to monitor:
BROWNS: Starting cornerback Joe Haden said on Twitter that he has a sprained knee and will have an MRI on Monday. Haden came in and out of the game, which probably means it's more bothersome than major. The Browns are on their bye this week. Also, wide receiver Mohamed Massaquoi suffered a shoulder injury.
RAVENS: Strong safety Tom Zbikowski sustained a concussion and will have an extra week to recover because of the bye. Left guard Ben Grubbs missed his third straight game because of a toe injury and was replaced by Andre Gurode. "It's taking its time, but it's getting better," Grubbs told MASNSports.com. "The swelling is going down, so that's a good sign, but it's slow healing. It's coming along. Just continue to get treatment, continue doing what I can do, and hopefully be out there soon."