The Sonic and Knuckles backfield, with which the Detroit Lions posted a 12-2 record this season, will be all Sonic during the 2024 season.

Running back David Montgomery suffered a knee injury in Sunday’s 48-42 loss to the Buffalo Bills that will require surgery and will sideline him for the remainder of the season, Lions coach Dan Campbell said Monday.

That leaves Jahmyr Gibbs alone as Detroit’s primary running back.

“We have a lot of confidence in Gibbs,” Campbell said. “As the season went on he got better and better and when he got the opportunity he made a lot of plays. He made some big plays for us yesterday. He brings the explosive element with him. He’s getting better in the passing game and then you see what he’s capable of in the running game, so we have a lot of confidence.

“I think for him it’s going to be like this: We’ve got to take advantage and maximize the reps we have for him and make sure we don’t give him too much. We still need to be able to deal with him wisely. But we need it, and that’s the trick.”

Entering Sunday’s game, Gibbs had 178 rushing attempts for 1,016 yards and 10 touchdowns and 34 receptions for 312 yards and two touchdowns and Montgomery had 180 rushing attempts for 771 yards and 12 touchdowns and 32 receptions for 310 yards in 2024.

While Campbell did not provide details about Montgomery’s injury, the running back reportedly suffered a torn medial ligament on Sunday.

Montgomery had 4 yards on five rushing attempts and 31 yards on four receptions against Buffalo. Gibbs played a season-high 59 offensive snaps on Sunday, rushing for 31 yards and a touchdown on eight carries and 83 yards and a touchdown on five receptions.

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“David is so tough, man,” Campbell said. “He kept playing through it, then had it looked at today and realized that was it. He’s just the ultimate teammate, the ultimate competitor, and we’re going to miss him, man. He is one of those who put us in this position and helped us get to where we are now. And the rest of us owe it to him to move on and make sure this wasn’t in vain.”