I would be really interested if someone could explain to me how a physio would address scapula stability.

I have weak scap muscles probably due to my shoulder injury and have only recently after seeing a dance physio in the US started to work on activating the scaps. I also understand that instability an be affected by a number of things including an unstable g-h joint, tight pec and scalene muscles long with under used scap, lats and rhomboid muscles.