If you feel the bone moving up down or inside out, then this funny sensation can only be solved by surgery.
Also, if you can see a protruded bony end near shoulder, sometimes painful, better to go for surgery and get it corrected.
The ACJ is a very important player while doing over head abduction.
Next Steps
Consult online with all xray etc
Health Tips
Why do you want to live with a compromised joint, when you have a option of getting it corrected with a minimally invasive procedure , lasting 20mins