X-rays were negative. Although the team said at halftime his return was questionable, he took the floor with the starting five when the game resumed.
James finished with 26 points, but the Celtics pulled out a 92-87 win.
James was hurt after driving for a layup, either twisting something on his way to the basket or when he landed. He hobbled off toward the Cavaliers bench and then dropped onto the court in front of the scorer's table with 4:24 left in the first half.
Cavaliers coach Mike Brown and the training staff rushed over to attend to James, while the crowd hushed and the players on both benches looked over to see what was happening. After being looked at on the floor for a few minutes, he limped off to the locker room, favoring his right leg, getting a cheer from the Boston fans.