Boston Celtics All-Star point guard Isaiah Thomas will miss the remainder of the postseason after aggravating a right hip injury during Friday's Game 2 loss to the Cleveland Cavaliers.

The Celtics announced Saturday that Thomas suffered a "re-aggravation of a right femoral-acetabular impingement with labral tear" during Game 2 of the Eastern Conference finals.

Thomas initially injured the hip March 15 against Minnesota and missed the following two games. He aggravated the injury in Game 6 of the Eastern Conference semifinals against the Washington Wizards last week.

He sat out the second half of Game 2 vs. Cleveland because of what the team called a hip strain. He missed all six of his field goal attempts and scored just two points in 18 minutes of a 130-86 blowout loss.

Isaiah Thomas first hurt his hip during a March game against Minnesota. Nathaniel S. Butler/NBAE/Getty Images

"I'm hurting," Thomas said in a text to ESPN's Mark Schwarz. "I gave it everything I had. I'm suppose to be out there competing with my guys and I can't. That's the most frustrating part."

"Isaiah has worked tirelessly to manage this injury since it first occurred," Celtics team physician Dr. Brian McKeon said in a statement. "The swelling increased during the first two games against Cleveland, and in order to avoid more significant long-term damage to his hip, we could no longer allow him to continue."

The Celtics said Thomas did not accompany the team to Cleveland in advance of Sunday's Game 3. He is evaluating treatment options.

The Cavaliers lead the best-of-seven series 2-0.