I was diagnosed with TOS 12 years ago... after years of Docs trying to figure out what was wrong. Tons of PT, lots of pain meds and muscle relaxants. Finally had TOS surgery by Dr. George Thomas Providence Hospital Seattle. It took about a year and a half but the surgery was successfully. By successful I mean that I had reduced pain, improved quality of life. I still experience pain on that side if I over do, and have learned to compensate by using my left side predominately. I don't think you ever fully recover, but the surgery did help me.