Just one word of encouragement. I too have a right shoulder problem. Four years ago, a fall severed two of the tendons in my right shoulder. Subsequent surgery was not successful. I had played the harp since age 7 and was afraid my harp playing days were over. I am unable to raise my right elbow to shoulder height, or extend my arm forward. However, I have adapted by resting my forearm on the soundboard and sliding it up and down as I play. It may not look the best esthetically, but it allowed me to continue my harp career of many, many years.