Surgery for Benson
Injured Packers running back Cedric Benson will remain on injured reserve for the rest of the season after having surgery Wednesday on his sprained left foot. . . . Dallas running back DeMarco Murray was a limited participant in practice in what coach Jason Garrett said was the most football work the second-year pro has done since spraining his right foot on Oct. 14 . . . Bears return specialist Devin Hester (concussion) and guard Chris Spencer (knee) have been ruled out for Sunday’s game against Seattle . . . Steelers safety Troy Polamalu (strained right calf) appears ready to play for the first time since Oct. 7 after practicing for the second straight day.