Coach Mike McCarthy said the decision would be made before the game. Starks, the team's top rusher, was listed as questionable on the injury report after participating in a short walk-through session Wednesday.
"I thought he looked good today," McCarthy said. "Today was pretty much a little up-tempo, walk-through-type practice, just more of going through all of the different situations and assignments that we felt we needed to hit that we were not able to get done yesterday."
Starks suffered a sprained knee and an ankle injury in the final minutes of the win over Tampa Bay on Sunday. He was a limited participant in practice Tuesday, the only extensive on-field work the Packers had this week.
Players were not made available to reporters Wednesday, but a day earlier Starks expressed optimism about playing against the rival Lions.
"I'm doing good right now," he said. "I ran on it, I felt good today in practice, and it's obviously going to take some time, but I'm getting better, so … I'm a tough guy, so I should be able to stick it out."
Starks has 541 rushing yards this season after being a big contributor as a rookie late in the 2010 season during the Packers' run to the Super Bowl title. Ryan Grant is the starter at running back, but the veteran has rushed for only 267 yards and had his playing time diminished in favor of Starks the last several games.
McCarthy indicated the team won't scale back Starks' workload if he is cleared to play on Thursday. The team's other running backs are undrafted rookie Brandon Saine and versatile fullback John Kuhn. Saine hasn't played a down on offense since being promoted from the practice squad three weeks ago.
"If James Starks goes tomorrow, he's playing," McCarthy said. "We're not going to put players in the game that can only go so much. Ryan Grant's ready to go. Brandon's ready to go. We'll be fine either way. If James goes, he's going to be part of the rotation."
Aside from the uncertainty with Starks, the Packers are in good shape for the game.
Receiver Greg Jennings, who sustained a bruised knee Sunday, is probable to play. Jennings practiced Tuesday and went through the full walk-through Wednesday.
Packers injury report
Out: LT Chad Clifton (hamstring). Questionable: RB James Starks (limited; knee/ankle). Probable: LB Desmond Bishop (limited; calf); WR Greg Jennings (full; knee); LB Clay Matthews (full; ankle); LT Marshall Newhouse (full; knee); G Josh Sitton (limited; knee); LB Frank Zombo (full; hamstring).
"Frank Zombo is doing well," McCarthy said. "I would think he's definitely close, ready to play. So, he'll be part of the discussion when we do our game management. We'll see where he stands."
Lions injury report
Out: RB Jahvid Best (concussion); P Ryan Donahue (quad). Doubtful: DE Lawrence Jackson (did not participate; thigh). Questionable: DT Corey Williams (limited; calf); DE Willie Young (limited; ankle). Probable: WR Rashied Davis (limited; hamstring); S Chris Harris (limited; ankle); WR Calvin Johnson (limited; ankle); LB DeAndre Levy (limited; elbow); RB Maurice Morris (full; ankle); S Amari Spievey (limited; toe); QB Matthew Stafford (full; finger); WR Maurice Stovall (limited; shoulder).
The Lions held a walk-through practice so their participation listings are estimates.
Bill Huber is publisher of Packer Report magazine and PackerReport.com and has written for Packer Report since 1997. E-mail him at firstname.lastname@example.org, or leave him a question in Packer Report's subscribers-only Packers Pro Club forum. Find Bill on Twitter at twitter.com/PackerReport.