Walker, whose versatility made him valuable to coach Jim Harbaugh all season, had been listed as questionable for Saturday's game but wasn't expected to play for the Niners (13-3) because of a broken jaw he sustained Dec. 24 at Seattle. He still hopes to return if San Francisco advances to the NFC Championship Game next weekend, though he has been limited to conditioning and no football activities.
Many of the Niners' injured players used the bye week to get healthy after earning the NFC's No. 2 seed.
Wide receiver Lance Moore is out with an injured left hamstring for New Orleans (14-3).
Copyright 2011 by The Associated Press