Steelers QB Ben Roethlisberger missed the end of Thursday's practice after banging his broken right thumb on a teammate's helmet.  He said afterwards that he'd be ok. As long as Big Ben returns to practice on Friday, he'll be no worse for the wear against the Bengals this weekend.  With the Bengals one game back of the Steelers in the AFC Central, and the Steelers tied with the Ravens, division games are critical right now, especially in the AFC Central.