Ohhhhhhhh. I cannot even imagine how a shoulder or for that matter, a knee, feels when it is dislocated. There was a period of say, 4 months, about 15 years ago that my right thumb dislocated from time to time. (I couldn't bear to see it sticking out like that so I'd put my hand behind my back and pull the thumb back into place!) To play guitar I used an Ace bandage wrapped 'round my hand. Gradually it healed and it hasn't come out since.