Danilo Gallinari joined the Celtics this summer in a free agency deal.

BOSTON – The Boston Celtics announced today that forward Danilo Gallinari underwent successful left knee revision ACL repair. The surgery was performed by Celtics Team Physician Dr. Tony Schena at New England Baptist Hospital. Dr. Schena was assisted by Dr. Paul Weitzel, with Dr. Brian Cole also consulting on the case. Further updates regarding Gallinari’s recovery will be provided as appropriate.

The Celtics also announced that center Robert Williams underwent a successful arthroscopic procedure to remove loose bodies and address swelling in his left knee. The surgery was performed by Celtics Team Physician Dr. Tony Schena at New England Baptist Hospital. Williams is expected to return to basketball activities in 8-12 weeks.