WARNING: The above video shows the graphic nature of Paul George's leg injury.

Indiana Pacers All-Star Paul George suffered a gruesome right leg injury late in the U.S. national team's intrasquad scrimmage Friday night.

George leaped to contest a fast-break layup by James Harden with 9:33 left in the fourth quarter and his leg smashed against the bottom of the backboard stanchion.

Trainers immediately ran onto the floor and after roughly 10 minutes of stoppage, George was taken out of the arena on a stretcher. With players looking visibly upset, coach Mike Krzyzewski then announced to the crowd that the scrimmage would not be finished.

"There's no way the game could have gone on under the circumstances," USA Basketball chairman Jerry Colangelo said.

The White team led George's Blue team 81-71.

George was considered a lock to make the final 12-man roster for the World Cup of Basketball that starts later this month in Spain.

Several players took to Twitter shortly after George's injury, including LeBron James.