Ben Roethlisberger could miss four to six weeks after having surgery for a torn meniscus in his left knee.

The sources said Roethlisberger and the Steelers were informed of the timetable by orthopedic surgeon Dr. James Bradley based on what the doctor saw when he performed the arthroscopic procedure Monday.

"Doc says my knee looked good, but there still was some stuff in there from when I had my bone bruise last season in St. Louis," Roethlisberger told the Pittsburgh Post-Gazette on Tuesday. "He said that might keep me out a little longer than just a simple meniscus tear. Maybe an extra week or so. But there's no way to put an exact timetable on it. It all depends on my pain and how I feel."

Landry Jones is taking all snaps with the first-team offense and will start Sunday against the Patriots.