An extended loss of running back Michael Turner could handicap the Falcons in their bid for a second consecutive playoff trip.
He had nine rushes for 111 yards with just over nine minutes left in the second quarter before going down.
He left the game after two runs to move the ball down to Carolina's 15 with 9:08 left in the second quarter. On a 10-yard run up the middle, he was tackled by Carolina's Jon Beason and left the game.
He was seen trying to walk for the trainers on the sidelines before leaving the field to go to the locker room.
Turner will have a test on Monday to reveal the extent of the injury.
"I'm assuming that it's a [MRI]," Turner said Sunday of the test. "They are going to let me know more tomorrow. We'll have plenty of time to talk about that."