Wilfork has foot injury

FOXBOROUGH, Mass. -- Patriots defensive tackle Vince Wilfork injured his foot during the second quarter of Sunday's game against the Panthers. His return is questionable.

Titus Adams, signed to the active roster from the practice squad earlier this week, helped fill Wilfork's spot at nose tackle.

Wilfork injured his left ankle earlier this season against the Falcons.

(Update: Wilfork returned to action on the Patriots' first defensive series of the second half, only to injure himself again on the first play. He was attended to on the field, but walked off slowly under his own power. The Patriots announced that his return is questionable).