The timeframe for his recovery, according to his agent Richard Kopelman of KLASS Sports, is in the 6-to-8-week range, which should have Arrington ready for the start of the team's offseason program in April.
The 27-year-old Arrington played in all 16 games, with 12 starts, this past season. His primary role has been as the team's No. 3 cornerback, but because of the high percentage of sub defense played by the team (67 percent), he is often on the field in a starter-type capacity.
He played 72 percent of the defensive snaps in 2013.
Arrington's availability is one of his strengths, as he's never missed a game since joining the Patriots in 2009. He is viewed as a key part of the team's cornerback corps in the coming years, along with Logan Ryan (second year) and Alfonzo Dennard (third year), and potentially free-agent-to-be Aqib Talib.