United Kingdom, Feb. 4 -- Channing Tatum has undergone surgery for a shoulder injury.

The 45-year-old actor has revealed he's been in hospital for a procedure after separating his shoulder, and he admitted the recovery will be "hard".

He posted x-rays of his separated shoulder and one with a screw in place on his Instagram Story.

Channing also posted a black and white photo of himself in bed wearing a hospital gown, and wrote: "Just another day. Another challenge.

"This one is gonna be hard. But whatever. Let's get it in."

The Hollywood star did not confirm when the injury occurred, and it's not known if it's related to him getting hurt in the set of Avengers: Doomsday last summer.

In an interview with Variety published in September...