ATTIreland - thanks for your reply. I've only been doing the eccentric strength exercises for ~6 weeks. So I don't think it's been long enough to judge if that's working. My plan for now is to continue with the strength exercises, since they don't seem to aggravate the pain. And to continue to avoid biking and running, since they do aggravate the pain. It's helpful to hear that the eccentric strength work often takes 12 wks or more - I think I just needed some sort of general time frame to reference. It's frustrating to be off the bike for so long without any sense of when or if things may get better.

I have thought of PRP - an orthopaedic surgeon suggested it at a recent visit. It sounds interesting and promising. But as I understand it, it's also not very well studied. Since it's a new therapy, my insurance will likely not pay for PRP, and I would have to pay $1000+ out of pocket. At this point, I would be happy to pay $1000 for a complete fix. But it's a lot of money for something that's experimental and not sure to work.

Do you have any experience with PRP or sclerosing therapy?

Again, thanks for the reply!