LeBron James has often worn a padded sleeve on his right elbow since he first suffered an injury during the 2010 NBA playoffs.
James received an MRI on the elbow, but never discussed the extent of the injury.
James shot 11-for-35 over the final two games of the Cleveland Cavaliers' second round loss to the Boston Celtics, his final games with the franchise.
"My last year in Cleveland, I had an elbow injury that lingered throughout the playoffs," said James.
"I just tried to go out there and give it all you got. It sucks because you know you can play much better. You know you can do things but the injury is not allowing you to do it. It was on my shooting arm, so it was very tough. So I know what he's going through."