i have not heard of this procedure before. i did a quick research on it and it said it was an uncommon procedure but had better than 60-70% success rate. that isnt to bad. shoulder are tough. there is no other joint in the body like it.
i would do as much research on physicans that do this procedure more than 200-300 times per year. have a consult with them, and go from there. the docs in vail do alot of shoulders, but i am not sure about that procedure. you want somebody who does it alot. dont be the guinea pig.