Last I saw Az, he was gone for like 4 weeks. I could be wrong but I'm pretty sure about it. Here's a clip for last week. Sounds nasty.
Brian Urlacher (LB, CHI) – Urlacher had to go to the hospital at about 4 a.m. Monday morning to get pressure relieved from a lower-leg injury that had blown up with fluid overnight. Urlacher told the media that he was kicked in the calf late in Sunday’s game, and apparently was bleeding internally. He had to have surgery to repair the damage and stop the internal bleeding, which could have led to amputation if it was not quickly dealt with. The injury will reportedly keep him out of action for four to six weeks. Urlacher has been playing well, and he is considered critical to the success of the Bears defense. He will not be placed on injured reserve.