The Iron Man is in jeopardy.

And we don’t have any idea yet how the NFL’s investigation into Brett Favre’s texting habits will turn out yet.

Minnesota Vikings coach Brad Childress announced that Favre has two broken bones in his left ankle and is wearing a protective walking boot. They are small fractures and Childress has yet to rule Favre, who has started 291 consecutive NFL games, out for Sunday’s game at New England.

Favre had offseason surgery on the ankle, and according to Judd Zulgad of the Minneapolis Star Tribune, he was injured in the third quarter of the Vikings’ 28-24 loss to the Green Bay Packers on Sunday night at Lambeau Field. He will not require an additional surgery after undergoing an MRI. Per Zulgad, Favre has an avulsion fracture in his heel bone as well as a stress fracture.

"Once he's functional, he can play," Childress said. "As you know he's had ankle and heel problems for a long time so that walking boot makes him a little bit more comfortable and I wouldn't rule anything out in terms of the end of the week. Don't really have a time-frame work on it.”

The alternative, of course, is turning to Tarvaris Jackson, who was pushed to a backup role during 2009 preseason when Favre came on board.

“We have to do what's right for the Minnesota Vikings," Childress said. "That's what I get charged with at the end of the day. I'm not worried about somebody getting one more start or one more yard to equal 300. I think the picture will clear itself up as we go forward."

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Brad Biggs covers the Bears for the Chicago Tribune

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