Mankins, tight end Austin Seferian-Jenkins (shoulder) and linebacker Bruce Carter (thigh) did not participate in practice Wednesday. Mankins had played in 40 consecutive games before missing the Bucs' victory over the Jaguars in Week 5.
Mankins sustained the injury in practice on Oct. 7. Apparently the bye week wasn't enough for the veteran to return to full health.
"If Logan Mankins is out, he has a serious injury," coach Lovie Smith said. "That's the only thing that would keep him out."
Seferian-Jenkins said Tuesday that he was "close" to returning to action after missing Tampa Bay's past three games. But he wasn't seen participating in the Bucs' practice Tuesday, and his absence Wednesday suggests he might need more time before playing again.
In other injury news, offensive tackle Reid Fragel (head), defensive tackle Gerald McCoy (shoulder), defensive tackle Tony McDaniel (groin), wide receiver Russell Shepard (hamstring) and center Evan Smith (ankle) had limited participation.