The team says the procedure, performed by Dr. Neal ElAttrache in Los Angeles on Wednesday, was necessary to reinforce the medial collateral and posterior cruciate ligaments. Ezeli sprained the knee during the regular-season finale at Portland on April 17.
Golden State expects him to begin rehabilitation soon and make a complete recovery, likely in a minimum of six to nine months.
Ezeli averaged 2.4 points, 4.0 rebounds and 0.95 blocked shots -- fourth among NBA rookies -- in 78 regular-season games and 41 starts. He was the 30th overall pick by the Warriors in the 2012 draft.
In 12 playoff games, he averaged 2.0 points and 2.5 rebounds in 11.2 minutes.