NFC West: Injury situations that matter

Arizona Cardinals: Kevin Kolb is expected to miss another week, at least, with the rib injuries he suffered against Buffalo in Week 6. Receiver Andre Roberts (ankle) missed practice Wednesday. Safety Justin Bethel (shoulder), receiver LaRon Byrd (head), defensive end Calais Campbell (calf), receiver Early Doucet (ribs), running back William Powell (shoulder), running back Beanie Wells (knee) and Kolb were limited. Long snapper Mike Leach (back) and safety Kerry Rhodes (back) were listed as full participants. Tight end Todd Heap, who has not played since suffering a knee injury in Week 2, was not listed on the report. He was a healthy scratch last week. Campbell's status is of great interest for Arizona. He has a chance to return this week.

St. Louis Rams: The team held out receiver Danny Amendola (foot), linebacker Mario Haggan (elbow), running back Steven Jackson (foot), defensive end Robert Quinn (concussion) and center Scott Wells (knee) from practice Wednesday. All but Haggan are key players for the Rams. Haggan is closer to a key player this week because the Rams' opponent, San Francisco, uses heavier personnel groupings. A healthy Haggan would have factored into the game plan more heavily. Quinn's concussion stands out as the most intriguing injury. He played 81 percent of the defensive snaps against Arizona in Week 12.

San Francisco 49ers: The 49ers enter Week 13 with a different look at the skill positions. Running back Kendall Hunter and receiver Kyle Williams are done for the season. Rookie LaMichael James or veteran Brandon Jacobs could get playing time in Hunter's place. Rookie receiver A.J. Jenkins is one step closer to the field now that Williams is out, but the 49ers have other options. Randy Moss could get more playing time, with Michael Crabtree and Mario Manningham getting additional slot work in Williams' absence. Tight end Delanie Walker is hurting with hip and rib injuries. He missed practice Wednesday. The 49ers listed kicker David Akers with a pelvis injury. He missed one field-goal try and had another blocked against New Orleans. The team brought in kickers for tryouts just in case. The NFL's leading sacker, Aldon Smith, has been dealing with shoulder trouble recently. He came out of the New Orleans game briefly as a result. The team listed him as limited in practice Wednesday. Cornerback Tarell Brown (knee), tackle Anthony Davis (finger), safety Dashon Goldson (ribs, calf), linebacker Tavares Gooden (elbow), running back Frank Gore (wrist, ribs), Manningham (shoulder), safety Donte Whitner (knee) and linebacker Patrick Willis (shoulder) are listed as full participants.

Seattle Seahawks: Defensive end Red Bryant (foot) and linebacker Leroy Hill (ankle) did not practice Wednesday. Bryant's injury situation was newly revealed. It could explain some of the Seahawks' troubles in run defense recently. He hasn't been as active or effective as in the past. The Seahawks otherwise appear quite healthy. Running back Marshawn Lynch (back) and defensive end Greg Scruggs (oblique) were limited. Lynch appears on the injury report regularly and plays in the games anyway. Seattle welcomed back guard James Carpenter from a concussion last week. He has played in 15 of 27 games since Seattle made him a first-round draft choice in 2011.