The club says the procedure was performed Wednesday and that Evans is starting six to eight weeks of rehabilitation immediately.
Evans played in 72 games this season, averaging 14.5 points, 5 assists, 4.7 rebounds and 1.2 steals in 28.2 minutes per game.
He began the season as a reserve, but became a starter after several teammates were injured. Playing mostly shooting guard, and sometimes point guard, his production rose significantly, including a single-game career-high 41 points in an upset of Oklahoma City.
Pelicans coach Monty Williams has not ruled out keeping Evans in the starting lineup next season, even with a fully healthy roster.