Let's take a rare Thursday trip through the NFC North injury report, which has more than a few big names on it.
Chicago Bears: Linebacker Pisa Tinoisamoa was limited in practice because of a knee injury that kept him out of the Bears' Week 11 game at the Miami Dolphins. Coach Lovie Smith told reporters that the injury is "a little bit of a concern for him." Nick Roach would replace Tinoisamoa against the Detroit Lions if necessary.
Detroit Lions: We already know the Lions won't have either of their top two quarterbacks Sunday against the Bears. They could also be without defensive end Kyle Vanden Bosch (neck) and right tackle Gosder Cherilus (knee). Neither player practiced Thursday. Vanden Bosch, who had 10 solo tackles in the Lions' Week 1 game against the Bears, would probably be replaced by Turk McBride or Lawrence Jackson.
Minnesota Vikings: Tailback Adrian Peterson (ankle), left guard Steve Hutchinson (thumb) and defensive end Ray Edwards (ankle) are scheduled to practice Friday, interim coach Leslie Frazier told reporters. Peterson told reporters that he thinks he'll be able to play Sunday against the Buffalo Bills but that he wants to test his ankle in practice first.
(The Green Bay Packers haven't released their injury report yet. I'll update this post if it contains any significant news.)