Boston Celtics forward Jeff Green underwent successful surgery Monday to repair a potentially life threatening aeortic aneurysm, according to the Boston Globe.

“Surgery went well,” Celtics head coach Doc Rivers told the Globe. “They’re saying it went great. Obviously, our thoughts, our prayers and every part of our being is with Jeff right now.”

Doctors found the aneurysm during a routine physical with the team in December. The condition, which if unfound could have been potentially fatal, is believed to force Green out for the entirety of the 2011-12 season.

Last season Green averaged 13.2 points and 4.8 rebounds per game in 75 contests between the Boston Celtics and the Oklahoma City Thunder.

Boston Celtics forward Jeff Green has not been able to practice with the team because he failed to pass a physical, CSN New England reports.

Celtics president of basketball operations, Danny Ainge, told reporters that the club had “found something” in his physical, which caused them to leave him off of the practice court. CSN New England reports, however, that the finding should not jeopardize the one-year, $9 million contract Green recently signed with Boston.

“We anticipate he’ll be here soon in practice,” Ainge told CSN New England. “He’s going through the tests again today and tomorrow, and he should be fine.”

Green, 25, averaged 13.3 points and 4.8 rebounds between the Oklahoma City Thunder and the Celtics last season. In 49 games prior to being traded to Boston, Green scored 15.2 points per game as a starter for the Thunder. In the second half of the season, the former first round pick averaged just 9.8 points per contest serving mostly as a reserve for the Celtics.