In the spirit of sharing information: Decades ago I broke my clavicle, crushed the glenoid into too many pieces to put back in place (they decided an attempt to do so via operation would do more harm than good), and had a cracked scapula. Physio left me with limited mobility.
A few years back I had a third degree separation. Better physio (Charlotye Savela at
http://acceleratedphysio.com/ ) got me back the lost range of motion from the previous accident. I kept doing the exercises.
The exercises must have worked, because when I fell last March I broke my humerus at the shoulder (fracture started just below the ball, went through the ball and came back down). I did new stretches/exercises for that one and was just considering doing some strengthening exercises, or at least restarting the ones I had done for the separation. Then I dislocated the shoulder last Thursday.
I'm trying to rest it for another week and start doing the exercises. Churn the butter to start, then walk the wall, push it up sideways with a pole, etc. I'm just waiting for whatever is still clicking on the upper outside to settle down first.
It sucks having to slow down for bumpy snow, but at least I'm skiing.