Graham Glasgow was listed as a limited participant in practice Friday, but the Detroit Lions’ starting left guard is questionable to play Sunday against the Chicago Bears because of a knee injury.

“We’re working through it,” Glasgow told the Free Press. “We’ll see.”

Glasgow played all 79 offensive snaps in last week’s loss to the Buffalo Bills, but needed X-rays after the game. He did not practice Wednesday or Thursday, when Lions coach Dan Campbell held most of the starting line out of practice for rest.

Frank Ragnow, Taylor Decker and Kevin Zeitler sat out practice Wednesday, and Ragnow joined Glasgow on the sideline Thursday. None has an injury designation for Sunday.

Campbell said before practice he did not expect Glasgow to practice at all Friday. Rookie sixth-round pick Christian Mahogany could make his first career start if Glasgow can’t play.

The Lions ruled running back David Montgomery out for Sunday’s game with a knee injury and will not activate linebacker Jalen Reeves-Maybin from injured reserve after starting his 21-day return-to-practice window on Thursday.

Safety Brian Branch is listed as questionable but expected to play with a calf injury, and Ifeatu Melfonwu practiced in full for the third straight day Friday and could come off IR Sunday to help the Lions’ short-handed defense.

Campbell said this week Melifonwu could contribute in a safety/linebacker hybrid role. The Lions are without starting cornerback Carlton Davis III, likely for the rest of the year.

“So much of this was about getting his legs back under him, getting him comfortable this week,” Campbell said of Melifonwu. “I’m not closed to (him playing). He’s gotten a little better every day and he’ll go out there today and practice and we’re working him in some stuff — just see where he’s at. But it’s good to have him back and it’s good to see him out there, functioning, working the position, and so that’s a good thing.”

Dave Birkett is the author of the new book, “Detroit Lions: An Illustrated Timeline.”