Pop star Sky Ferreira "saw bone" in her leg after she fell down an elevator shaft onstage while supporting Miley Cyrus on tour.

The singer was hospitalised in February (14) after slicing her leg open while performing at Cyrus' Bangerz show in California. She needed 60 stitches and has cancelled a number of shows since.

Ferreira performed to the end of her set and shock did not set in until she looked at her leg and realised the extent of her injury.

She tells the Sydney Daily Telegraph, "I played the set. I didn't know the injury was as bad as it was. When I looked down afterwards, I could see bone. That's when I went into shock and freaked out."