Blazers interim coach Kaleb Canales says Aldridge hurt himself in a 99-93 win over New Orleans on Thursday night and is day to day.
Aldridge is averaging 21.4 points and 8.1 rebounds for the Blazers. J.J. Hickson started in Aldridge's place.
Aldridge told ESPN The Magazine's Ric Bucher he rolled over on his left elbow in his sleep Thursday night and "woke up screaming."
Aldridge told Bucher he hyperextended the elbow twice against New Orleans, but that it didn't feel that bad after the game. X-rays taken before the Clippers game showed no damage, but Aldridge said he can't completely straighten it out and was constantly flexing his left hand as he talked before the game.
"Hopefully, I'll be back next game," Aldridge said. "I just didn't think I could do us justice tonight. I just don't have enough movement with it."
Information from ESPN The Magazine's Ric Bucher and The Associated Press was used in this report.