Linda - can't remember where, but at some point recently you mentioned conditioning yourself to keep your shoulders back to try to avoid extra surgery. I've now got a remedial iyengar yoga teacher, who helps quite a lot. TO help with the shoulder pain and tension she has shown me how to tie a yoga belt into a kind of harness to guide my shoulders down and back - it's quite comforting and not at all annoying. So might be worth getting a yoga teacher to show you.