Diagnostic arthroscopy of knee

Yes, I had it done.  I was having pain in the back of my calf where it attachs up behind the knee.  I went through a round of physical therapy, an x-ray and a MRI.  Nothing.  Doc said let's "scope it" and see what we find.  During the scope he found nothing that he thought would cause my pain, but he did fix a little "rough" spot while he was in.  Recovery consisted of another round of physical therapy for a couple weeks and then back to training.  Still hurt.

I ended up discovering that all I ever needed was to strenghten my calves after I injured it once weight lifting.  Within 2 weeks I felt great and started training for a half marathon.

By the way, it was two years that I couldn't run while I was going through all this!

That's the frustrating thing...two year injury. How did the PT not see that I wonder? 

I tried everything.  I took a whole season off from running to see if that helped.  The PT sessions were almost a year apart.  I didn't try the PT until I had exhausted everything I knew to do.  (except go back to lifting).  I had never been injured prior to that so I learned a lot.  I don't have a lot of regard for PT's anymore.  They put me through a painful process of scrapeing my legs the first time around supposedly trying to break down scar tissue.  Ugh..