Megadeth's Dave Mustaine must undergo surgery to repair damage to his neck sustained during the band's appearance on this summer's Rockstar Energy Drink Mayhem Festival, the frontman divulged prior to last night's Big 4 concert at Yankee Stadium in New York.

While the exact cause of Mustaine's injury wasn't revealed, the singer was hurt badly enough that he was confined to a hospital bed on Tuesday, with the band's Big 4 set alongside Metallica, Anthrax and Slayer seriously close to being canceled.

Luckily, he recovered long enough to hit the stage Wednesday night with Megadeth, who turned in a hits heavy 10-song set that spanned most of the band's career. Stay tuned for our full recap of the Big 4 show later today.

Mustaine was diagnosed with degenerative disk disease and arthritis in his neck in 2008 and had been treating it with a series homeopathic remedies. Hopefully, if his recent damage is related to that, the surgery will finally take care of an injury that has been plaguing him for a long time.

Get well soon, Dave!