Campbell (undisclosed) was carted off the field during the third quarter of Sunday's game against the Vikings, Tim Twentyman of the Lions' official site reports.
Sunday's game was delayed for several minutes while Campbell was carted off the field on a backboard after a heavy collision. He's unlikely to return to Sunday's contest, so Jimmy Rolder and Amen Ogbongbemiga are in line for more defensive snaps the rest of the way.