Jayson Tatum will miss at least the rest of the playoffs and beyond. The Celtics announced Tuesday that Tatum underwent successful surgery to repair a ruptured right Achilles tendon. Considering the severity of the injury, Tatum will be expected to miss a significant amount of time. Here’s the full statement from the Celtics:

On Tuesday, a new video surfaced online showing Celtics general manager Brad Stevens helping his All-Star off the court. With Tatum unable to put any weight on his ankle, he leaned on Stevens for support as they made their way to the locker room.