ALLEN PARK — Tight end Brandon Pettigrew returned to practice today (Friday) for the first time since he sprained his ankle at Green Bay on Dec. 9. It appeared to be on a limited basis. He has missed the last two games.

 Safety Louis Delmas (knee) also practiced on a limited basis after sitting out all week. He’s done this for the last two weeks which allowed him to play.

 Calvin Johnson (knee/ankle) did not practice but was on the field. He’s expected to play on Sunday against Chicago Bears.

 Defensive tackle Sammie Hill (toe) remained out. He hasn’t practiced all week which leaves the Lions slim at the defensive tackle position. If Hill can’t go, Andre Fluellen is likely to get the start. Fluellen was cut after training camp and then re-signed on Dec. 12 after Corey Williams was placed on injured reserve.

  Defensive end Kyle Vanden Bosch, who didn’t practice, has been taking rest days on Fridays.

  The Lions (4-11) are looking to snap their seven-game losing streak while the Bears (9-6) need a win and a Minnesota Vikings loss or tie to get into the playoffs. Kickoff is at 1 p.m. at Ford Field with coverage on Fox.

 (Follow @PaulaPasche on Twitter.)