"I tore my ACL shredding the gnar, but all is good. I opted for surgery so I can come back stronger than ever," he wrote.
On his Twitter account, Efron, who stars in the new Ted Bundy biopic "Extremely Wicked, Shockingly Evil and Vile", shared two more photographs of him. He is seen on a wheelchair outside the medical facility.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)