Lions LB Jack Campbell carted off on a backboard early in fourth quarter

There is a concerning injury situation developing in Detroit.Lions linebacker Jack Campbell has been carted off the field on a backboard after going down while making a tackle early in the fourth quarter of Sunday’s game against the Vikings.Campbell stayed down on the ground and did not move after twisting down T.J. Hockenson on a 10-yard gain.Medical personnel immediately tended to Campbell. Members of both the Lions and Vikings took a knee as Campbell was being taken care of. He was immobilized on a backboard with Lions players coming over to him as he was taken off the field.Some Lions players, including edge rusher Aidan Hutchinson, were visibly emotional on the Fox broadcast.Detroit leads Minnesota 12-7 early in the fourth quarter.