Patrick Chung back on injury report

New England Patriots safety Patrick Chung, who was removed from Thursday's injury report after being listed as limited in Wednesday's practice with a foot injury, was added back to the report as limited in Friday's walkthrough with a knee injury and is one of 13 Patriots listed as questionable for Saturday's AFC divisional playoff game against the Denver Broncos.

That list also includes starting offensive linemen Logan Mankins (left knee) and Sebastian Vollmer (back/foot), both of whom were "limited" in the three practice sessions this week. Mankins hasn't played since spraining his medial collateral ligament against the Dolphins on Dec. 24, and Vollmer missed the team's final five games.

"It felt good to move around a little bit out there," Mankins said Thursday. "It's still day to day. We'll see. No word yet. One day at a time. We'll see what happens."

The Patriots had perfect attendance for Friday's walkthrough, the second straight practice all players were accounted for.

Chung missed seven games with the foot injury before returning for the season finale against the Buffalo Bills. He had not been listed with a knee injury before Friday. It's unclear how or when Chung suffered the injury.

The other Patriots listed as questionable are cornerback Kyle Arrington (foot); offensive linemen Marcus Cannon (ankle) and Dan Connolly (groin); linebackers Dane Fletcher (thumb), Ron Ninkovich (hip), Tracy White (abdomen) and Brandon Spikes (knee); safety James Ihedigbo (shoulder); receiver Wes Welker (knee) and special teams captain Matthew Slater (shoulder).

Mike Rodak covers the Patriots for ESPNBoston.com.