Steelers' Polamalu likely to practice Wednesday

Steelers safety Troy Polamalu is expected to practice on a limited basis Wednesday for the first time since tearing the medial collateral ligament in his left knee Sept. 10 against Tennessee. Polamalu, a five-time Pro Bowl player, will wear a brace on the knee if he practices. His status for Sunday's game at Detroit has not yet been determined. Polamalu did some straight-line running last week, according to coach Mike Tomlin, but must show in practice he can change direction without problem.