How To Treat Jerks In Bones?

I had a jerk in my right shoulder while swimming few years ago. Since the day of injury, sometimes I use to feel dislocation of shoulder joint. For example, I was a good bowler that time but after this injury I couldnt bowl. Even sometimes if I do some movement above shoulder height dislocation happens for a minute or half, after adjusting my hand it comes back to normal. But this movement of dislocation gives me a death pain literally. Sometimes during sleeping if I put my hand behind my head same thing happens. I undergone treatment from few Ortho doctors but nothing helped. I did X-ray, MRI but still in vain. I am doing my exercise too. Simply I dont believe my joint. And I need your comments Sir to come up with some solution.ThanksSarfaraz Mumbai.