Lynch, 29, will remain on the active roster, with the hope being he misses 3-4 weeks and can rejoin the team this year.
Lynch met with specialist Dr. William Meyers in Philadelphia on Monday, who confirmed that his abdominal injury would require surgery.
Rookie Thomas Rawls, who has filled in on a few occasions for Lynch this season due to injury, will continue to see increased action in the Seattle backfield with Lynch out. He rushed for 309 yards and a touchdown last week, adding three catches for 46 yards and another score.
The Seahawks remain in the playoff chase at 5–5 and host the Pittsburgh Steelers on Sunday.
- Kenny Ducey