Kevin Garnett will miss the NBA playoffs and likely have surgery on his right knee during the offseason, Celtics coach Doc Rivers said today.

The surgery will be to remove a spur in Garnett's knee. But a strained popliteus tendon -- and not the spur -- has affected Garnett's inability to return from a Feb. 19 injury. The tendon strain must heal naturally, and has taken longer than anticipated.

Garnett performed in 53 games before sustaining the injury in Utah, then returned for four games.