According to Brad Biggs' blog, Israel Idonije is set to have arthroscopic surgery on one of his knees today.
Idonije has been on the injury report since the beginning of the season with a knee listed as his ailment, and he was questionable for Sunday's game against Detroit. He played and was credited with a forced fumble and a sack. Idonije was also involved on special teams, but didn't look as quick as usual. By doing the procedure today, there is a chance Idonije will return quickly. While it's unknown the exact reason they are working on his knee, it's not out of the question that he could be back on the field when the Bears play at Atlanta Oct. 18. The bye will certainly help.
So far this season, Idonije has registered 4 tackles, 1 sack, and 1 forced fumble, and has shown good ability to rush the passer.