Bears' Nick Roach uncertain for Patriots

LAKE FOREST, Ill. -- Chicago Bears linebacker Nick Roach practiced on a limited basis on Wednesday, but still remains a question mark to play against the New England Patriots on Sunday at Soldier Field.

Roach is dealing with a strained muscle in the hip/back region, an injury made even more painful by the cold Chicago weather. But he continues to make progress and was able to participate in certain drills for the first time since suffering the injury in the first half of the Bears' 24-20 win over Detroit on Sunday.

"I got in the tub [before practice], got it loose, so it's feeling a lot better," Roach said. "I'm hoping to be out there if it keeps improving and everything."

Fellow linebacker Pisa Tinoisamoa wore a helmet during the open portion of the workout, but did not practice for the second straight time this week.

The veteran linebacker is recovering from a right knee scope, but Bears coach Lovie Smith left the door open for Tinoisamoa to play against the Patriots. Players, however, generally tend to miss a few weeks when undergoing that type of procedure, so it seems unlikely Tinoisamoa will be available this weekend.

Running back Chester Taylor returned to practice, but was limited, after sitting out Wednesday because a sore knee. Defensive tackle Marcus Harrison missed practice because of an illness.

Jeff Dickerson covers the Bears for ESPNChicago.com and ESPN 1000.