"Got a little banged up on set today. Thanks to the medical staff who got me back in action an hour later!" Schwarzenegger said Thursday in his online message, which also featured a photo of him with a bloody gash down the center of his forehead.
TMZ said it was unclear how the action star sustained the injury.
Notable deaths of 2014 [PHOTOS]
Matthew McConaughey won't be in 'Magic Mike XXL'