McFadden says he will see how he feels Saturday before a decision is made about playing Sunday night when the Steelers (13-4) host the New York Jets (13-5) in the AFC championship game.
Nickel back William Gay would start if McFadden can't play.
Safety Troy Polamalu (Achilles' tendon) also returned to practice, as expected, and will play Sunday. Special teamers Will Allen (knee) and Arnez Battle (illness) practiced for the first time this week as well.
DE Aaron Smith has been limited in practice all week, and it is considered extremely unlikely he will play Sunday. Smith has not played since Oct. 24, when he tore a triceps muscle in a win at Miami.