I'm sorry to hear that. I've been nursing a knee problem the last few weeks, too - and might have to scrap the half marathon I was planning to do next month. I hear ya - it's frustrating.

But like several people have already said, better to take care of a problem knee now so you aren't permanently wiped out. Cross train however you can. I'm playing golf - didn't think I'd ever do that - it's very different, and I'm having fun! The recumbent exercise bike has been good, also the elliptical and the rowing machine (when I can bend that far).

Hang in there - Sending thoughts for a strong and long-term recovery.

Deb