Two Lions collided late in the second quarter and both had to be taken off the field.
Edge rusher DJ Wonnum was carted off after he and defensive back Brian Branch hit each other helmet-to-helmet while trying to bring down receiver Justin Jefferson on a catch.
Branch was able to walk off the field, but went to the locker room for further examination.
The Lions have a couple of other injury issues from the game against the Vikings so far. Center Cade Mays is questionable to return with an ankle injury. Running back Jacob Saylors is also questionable to return with a neck injury.
The Vikings lead the Lions 7-3 with two minutes remaining in the second quarter.