The Kings moved Greene off injured reserve on Friday, adding another important veteran for their playoff push.
Greene injured his back in the Kings' opener Jan. 19 against Chicago. He missed 42 games with the injury, but returned to the ice for practice in recent weeks.
He could boost the Kings as they jockey with San Jose for the fourth playoff seed in the Western Conference.
Greene was a major part of the Kings' sturdy defense during last season's title run, but Greene and fellow veteran defenseman Willie Mitchell have missed virtually the entire season with injuries, forcing Los Angeles to trade for Robyn Regehr and Keaton Ellerby.