Dodgers catcher A.J. Ellis underwent a 20-minute arthroscopic procedure, performed by team physician Dr. Neal ElAttrache, to debride (clean up) the medial meniscus of his left knee. According to the team, he will start his rehabilitation today and a full recovery is expected in 4-6 weeks.Catcher Tim Federowicz was recalled from Triple-A Albuquerque and started against the Detroit Tigers on Tuesday night.