The Portland Trail Blazers center was scheduled to have arthroscopic surgery to “remove debris” from his left knee. The team announced that the former No. 1 pick in the 2007 draft was to have the surgery Monday in Vail, Colo.

The often-injured 7-footer had the same procedure on his right knee earlier this month.

Over the course of his NBA career, Oden has had microfracture surgeries on both knees, surgery to repair a fractured left kneecap and now the two procedures this month.

Oden, who has hot played in an NBA game since Dec. 5, 2009, has appeared in 82 career games for the Blazers, averaging 9.4 points and 7.3 rebounds.It was expected that he might be able to play for the Blazers this season, but a checkup before the start of training camp in December reportedly revealed concerns about a non-weight-bearing ligament in the left knee, further setting back his rehabilitation. Since then, he has turned down repeated interview requests.

– Reported by the Associated Press