He's being replaced on the ongoing tour with Evans, and it is said that he has broken both of his arms. Can't find anything more on the internet. Anyone who knows?
Nothing against Joe Perry, but I'm not interested in his music or playing (although I don't wish him any ill will either). As a fan of Stern I hope he's able recover and I am actually interested in the nature of the injury.
The popularity contest that decides news coverage in music is particularly lame.