It gets old hearing that rotator cuffs are the source of all shoulder problems. Nobody ever talks about how other parts of the body affect the rotator cuff and force it to get hurt. You have to look beyond the point of pain to really understand how the pain got there in the first place.
When a Rolfer — or anyone who deals with posture — looks at your body, they are looking at the whole picture. Yes, there may be problems with the rotator cuff locally, but you must ask why the rotator cuff is having trouble.
What is it about your activities? What is it about your body? What is it about your muscle balance? Just looking at the rotator cuff is often a losing proposition.
Check this video out for a quick example of how a hunchback can hurt your shoulders.