Colts linebacker Pat Angerer could miss six weeks after fracturing a foot during the preseason opener.
Coach Chuck Pagano made the announcement during a conference call with reporters Monday. Pagano did not say which foot was injured in Sunday's game but Angerer will need surgery and should be back at some point this season. He led the Colts in tackles last year with 146.
Backup linebacker Scott Lutrus is not as fortunate. He will have season-ending surgery after being diagnosed Sunday with a sprained knee.
Starting guard Mike McGlynn also will be out indefinitely with a high ankle sprain. Pagano did not say how much time McGlynn would miss. Running backs Mewelde Moore and Delone Carter both have rib injuries.