Starting center Scott Wells, who sustained a knee injury in Sunday's game against San Francisco, returned to the practice field on Wednesday as a full participant, and is probable for Thursday's game at Detroit.
Wells said the injury occurred on the first series of the game, but he initially thought it was just a bruised knee. He didn't participate in Tuesday's practice due to "a lot of swelling" in the knee, but said that had gone down and the MRI was clear.
The other players that are probable for Thursday are linebacker Brandon Chillar (hand), tackle Chad Clifton (knee), running back Ryan Grant (neck), defensive ends Cullen Jenkins (ankle) and Johnny Jolly (back), fullback John Kuhn (hand), guard Josh Sitton (back) and cornerback Charles Woodson (hip).
Tackle/guard Allen Barbre (ankle) and running back Ahman Green (groin) are doubtful for Thursday. Linebacker Aaron Kampman (knee) and cornerback Al Harris (knee) are out.
For Detroit, safeties Kalvin Pearson (hamstring) and Ko Simpson (knee) and linebacker Ernie Sims (hamstring) are out.
Starting quarterback Matthew Stafford (knee/left shoulder), who missed the Week 6 game earlier this season at Lambeau Field with a knee injury, is doubtful. Veteran Daunte Culpepper is expected to start at quarterback if Stafford cannot play.
Defensive end Dewayne White (toe) is also doubtful.
The Lions' leading receiver, Calvin Johnson (hand/knee), is questionable. Safety Louis Delmas (ankle) and guard Daniel Loper (back) are also questionable.
Defensive tackles Joe Cohen (ankle) and Grady Jackson (knee), linebackers Jordon Zizon (neck) and Zack Follett (neck), and running back Kevin Smith (hip) are all probable.