If you needed another reason why surgery should only be a last resort after all other options have been tried first, here’s a story about a particular kind of shoulder surgery that has been shown to have no better success rate than fake surgery. We saw a study like this about knee surgery a couple of years ago.
https://www.npr.org/sections/health-shots/2017/11/20/565406503/popular-surgery-to-ease-chronic-shoulder-pain-called-into-question?sc=tw
Doctors think the chronic pain of “shoulder impingement” may arise from age-related tendon and muscle degeneration, or from a bone spur that can rub against a tendon.