Complex sentence: Alice in Chains was added as openers to Ozzy Osbourne's "No More Tears" tour, but just days before the tour began, Layne Staley broke his foot in an ATV accident, forcing him to use crutches on stage.
Split into simpler sentences: Alice in Chains was added as openers to Ozzy Osbourne's "No More Tears" tour. Mere days before the tour began, Layne Staley broke his foot in an ATV accident, forcing him to use crutches on stage.