Good….I think this is a good idea. Ask about getting an immobilizer brace, as this is what is commonly used after a shoulder replacement. If your surgeon declines to order this for you, you can contact your insurance company and see if they have procedures for reimbursement if you purchased one on your own. Or your GP may be able to order it for you. And, should your surgeon not support getting this for you, ask questions about why he doesn’t feel it’s needed, especially since you are getting that popping sensation because your arm is moving when you lean forward.
Let us know how it goes.