Brand had an MRI on Thursday and did not travel with the Sixers. He is listed as day-to-day.
Brand didn't play the final 17 minutes of the 76ers' 114-102 loss to the Los Angeles Lakers on Wednesday when he first complained of the injury. He was limited to three points on 1-for-7 shooting in 25 ineffective minutes.
Brand leads the Sixers with 16.7 points and 10 rebounds a game.