I had a frozen shoulder several years ago. I went to a lot of PT and it just wasn't getting any better. I have a rare autoimmune disease that made my muscles very weak. They finally decided to do a "manipulation" on my shoulder. They put me under and literally broke it loose. The worst part was having to go to PT again the day of the surgery and almost everyday after for a couple of weeks. It worked I have full range of motion and no pain now. It was my left shoulder and I think I strained it because I was so weak I used to have to push myself to a standing position with that arm, especially in the bathroom. At one point durring the early stages of my illness I was literaly lifting my left leg out of the car with both arms when I drove.