Troy Polamalu (knee), Matt Spaeth (elbow) and Markus Wheaton (illness) did not participate in practice Thursday. For Polamalu and Spaeth, without participating in Friday's practice there is a strong possiblity those players are not dressed for the Week 16 game at Heinz Field.
Will Allen would replace Polamalu in the secondary if he is unable to play, and Michael Palmer would replace Spaeth in specific offensive packages if Spaeth's hyper-extended elbow isn't well enough to play.
Veteran cornerback Ike Taylor (shoulder/forearm) was a limited participant Thursday, and will look to be a full participant Friday to prove to coaches he is capable of playing Sunday.
Marcus Gilbert (ankle), James Harrison (knee), Maurkice Pouncey (ankle), Ben Roethlisberger (not injury related), Steve McLendon (shoulder) and Heath Miller (not injury related) were all full participants in practice Thursday.
The Steelers will release their final injury report Friday leading up to the game Sunday at 1 p.m. ET at Heinz Field.