Kevin, hope to hear the diagnosis when you get one. For me it was clear-cut...bones spurs and mostly bone on bone. It must be driving you crazy to not be able to know the root cause of your pain.
For a large number here, their activity was/is their addiction which is why most got the HR...to be pain free and return to the sport or activity that they love and looked forward to each day. For me it was running. Not close to being an elite, I plodded along in the 8:00 regime. Marathons and Halfs, which became Halfs and 10Ks, which became daily fitness runs, which became every other day...you get the point. Anyway, despite everything else I tried (rest, ice, massage, chiro, PT, injections) it got worse and got in the way of my addiction.
I hope to return to distance running, but as someone smarter than me once said, your level of desperation (or pain) will drive your tactics. Its going to be great to get back to 5 miles as a walk, then a long run and then hopefully just a warmup. I hope a surgeon can give you an accurate eval and get you back on track. Good luck, Curt