First-round draft pick Gabe Carimi is the second Chicago Bears offensive lineman placed on injured reserve in less than a week.
Carimi, the team's starting right tackle, has been out since the second game of the season with a dislocated right knee. Carimi returned briefly to practice, but suffered a setback and underwent an arthroscopic procedure Nov. 11.
Lance Louis moved from right guard to right tackle to replace Carimi and will continue at that position.
The Bears put left guard Chris Williams on IR earlier this week with a dislocated left wrist and announced Edwin Williams would start Sunday against the San Diego Chargers.
The Bears have elevated two practice squad players to replace Williams and Carimi: former Montana tackle Levi Horn and former Nebraska guard Ricky Henry.