Chicago Bears defensive tackle Dusty Dvoracek will undergo arthroscopic surgery on his right knee this week.
The Bears reported on their Web site Wednesday that the procedure will be performed Friday, and coach Lovie Smith was hopeful the injury wasn't too severe.
"Right now weâre going to keep our fingers crossed and just hope for the best and go from there," Smith told reporters Wednesday.
The oft-injured Dvoracek sprained his right medial collateral ligament in Saturday night's 17-3 preseason victory over the New York Giants. Several Chicago media outlets reported that Dvoracek tore the anterior cruciate ligament, but Smith said that day the team knew only about the sprain.
"I think some things just happen for whatever reason," Smith said. "You canât understand why. I don't know the reasons why Dusty has had to deal with injuries. But I know each time he has had to deal with an injury, he has come back stronger. He was playing his best ball this past weekend when he had the injury."
Dvoracek has played in 13 games in three seasons, each one ending with him on injured reserve. His contract expires following this season, and the final roster cutdown to 53 players is Sept. 5.
The Associated Press contributed to this report