Portland center Greg Oden will likely miss the season after fracturing his left knee cap during a game against Houston on Saturday night.
Oden will undergo surgery, the Trail Blazers said.
The 7-foot center dropped to the floor clutching his left knee and grimacing after colliding with a driving Aaron Brooks midway through the first quarter.
He was almost immediately surrounded by trainers and physicians. The crowd at the Rose Garden stood and chanted "Oden! Oden!"