Defensive end Adam Carriker underwent surgery to repair a torn quadriceps tendon (John McDonnell/ The Washington Post)

Washington Redskins defensive end Adam Carriker underwent successful surgery to repair a torn quadriceps tendon in his right leg, the sixth year pro announced via Twitter Thursday. Carriker is expected to take five months to recover.

Carriker suffered the injury on the second play of the Redskins’ 31-28 loss to the St. Louis Rams Sunday as he tried to get to Rams quarterback Sam Bradford. The tendon is at the base of Carriker’s knee.

“Out of surgery and doing good!” Carriker announced via his Twitter account Thursday afternoon.

Carriker, whom the Redskins acquired from the Rams via trade in 2010, recorded 34 tackles and a career-high 5.5 sacks last season. He was a free agent this offseason, but re-signed with Washington in March for a four-year, $20 million contract.