Shoulder injuries are intense, Originally popped out in an A&B at a party a decade ago. Took me about 1-2 years to get appreciable function back. If I mess around on overhead presses or dick around at all, it threatens with that locked out feeling which I am guessing is the joint seperation. I am lucky I can do any exercise with a full ROM with as much weight as I want, as heavy as I want, as long as I don't relax or half-ass it while fully extended.
Everybody I talked to said avoid surgery at all costs, so I did. My doctor had shoulder surgery, I have never seen a guy in such intense pain in my life. Its a big clinic and open area with patients at different stations so I could see his every move. The guy was tearing up from the pain, big thick headed Polish guy 300 lbs, and thats when I decided no surgery for my bones jones ass.
People who get their midsections sliced open and appendix's removed look a lot happier.