Actor Zach Braff is battling injury during his Broadway run after hurting his leg.

The former Scrubs star is currently appearing in a musical adaptation of Woody Allen's crime comedy Bullets Over Broadway, but has sparked fears among fans after posting a picture online showing him resting an ice pack on his knee.

He adds in a caption on Instagram.com, "Broadway ain't no joke. #Smash."

No further details about how Braff sustained the injury and whether it will affect the show were available as Wenn went to press.