Indianapolis Colts linebacker Pat Angerer tried to play through the pain in his knee. But in the end, the pain was too much for him to overcome. The Colts placed Angerer on injured reserve -- and likely ended his career with the team -- on Tuesday. Angerer, who will be a free agent in the offseason, will have surgery on his knee. The Colts and Angerer wanted to avoid placing him on IR, but they both agreed this was the best decision for everybody. It's been an interesting past few weeks for Angerer, who led the Colts in tackles with 146 two years ago. He started the first nine games he played in this season, but a sign of things to come happened when he didn’t start against Tennessee on Dec. 1 and Cincinnati the following week. Angerer only played 22 snaps against the Bengals and was inactive for Sunday's game against the Houston Texans. Kelvin Sheppard replaced Angerer in the starting lineup.