The Bears may be without David Montgomery when they play the Rams this weekend.

The rookie running back made an appearance on the injury report after Wednesday's practice, listed as limited with an ankle issue. Matt Nagy went into a little more detail on Thursday, explaining that Montgomery "lightly" rolled his ankle. He also declined to speculate whether it would be something that could keep him out on Sunday.

"We wanted to keep him out," he said. "And we’ll just keep an eye on him for here today with how things go.

"We’re working through that. I can’t say either way. We’ll just kind of keep an eye on it as it goes here and see how it is today. We’re working through today and see how he goes."

It'd obviously be a tough loss for a Bears' offense that's finally starting to see (small) signs of progress as Montgomery's become more involved. He went over 100 yards rushing for the first time in his NFL career against the Chargers in Week 8, and has seen his yards per carry tick up over the last month (3.6 over the last four games).

"He’s always moving forward, always getting a little more than he should," offensive coordinator Mark Helfrich said. "And that’s been contagious I think for the rest of the unit. He’s a tough, tough dude, and again we’ve said, he’s an all-purpose guy. He can protect. He can obviously run the football. He’s a good route-runner."

The Bears would be in a precarious position if Montgomery can't go on Sunday. After cutting Mike Davis last week, they'd be left with Tarik Cohen and Ryan Nall as the two active backs. With Trey Burton also nursing a thigh injury that could keep him out, the Bears' offense will be notably short-handed going into a key battle of two NFC teams trying to keep any glimmer of a playoff berth alive.

"You're going to have contingency plans for everybody and everything," Helfrich added. "It's perfect because I have no idea, and can answer everything honestly as possible. You have to have plans for every single situation, and we'll do that to the best of our ability."