Tennessee Titans running back Shonn Greene underwent arthroscopic surgery on his right knee coach Mike Munchak said Tuesday night on his weekly radio show. Munchak said Greene had the procedure on Monday.

Munchak says Greene will be on a week-to-week basis. A source told ESPN that Greene will likely miss the next two games.

Greene was injured during the Titans' opener a 16-9 road win Sept. 8 against the Pittsburgh Steelers. He'd carried four times for 18 yards.

The Titans' third back Jackie Battle worked in Greene's place from there against the Steelers and again in Sunday's overtime loss to the Houston Texans.

The Titans signed Greene to a three-year $10 million deal in March as a short-yardage change-up back to speedster Chris Johnson.