Steelers running back Le'Veon Bell out with right knee injury

Steelers running back Le'Veon Bell was carted off with a right knee injury and will not return.

Bell ran to the left and was tackled by two Bengals defenders and looked to have twisted his knee.

The Steelers had just gotten quarterback Ben Roethlisberger, who had missed four games, back from a knee injury he sustained in Week 2.