Well I have been having pain and weakness in my left arm when milking and doing most anything. Everyone kept telling me it was age related arthritis, 48 is NOT THAT OLD. I had an x-ray done and loe and behold I do not have ANY arthritis in my shoulder. However I do have a partially torn rotator cuff. We are going to try physical therapy first, the recovery time for surgery is 6 months or more. I was given a betamethasone shot into the joint and it has helped somewhat so maybe I can do the exercises to help strengthen my shoulder muscles.