Hi, I injured my AC joint two years ago (not sure how exactly) but went to ortho and physical therapy and it didn't help. Ortho in the end gave me cortisone injection which seemed to have worked at that time. But unfortunately I re-injured it. I have my doctor's appointment next week but does anyone have any suggestions on what I can do to rehab it? Anyone had experience with AC joint injuries. It is sore and taut in the morning and it also stiffens up when I carry load in my back like a backpack or something else. Any stretches etc that will strengthen it? No pain these days but soreness in the morning and stiffness throughout the day. Thank you!