Get the cutting done, then follow the Doctor' orders to the letter!!! The physical therapy is sort of rough, but it will work. Takes about 6 months to get back to strength, or more. I've had both shoulders and both thumbs worked on, rotator cuff tears, etc. Luckily, have not reinsured myself, but I am about 80%, which ain't bad for an old guy! The repair work will be better than the pain of " putting up" with the injury
Hawkdancer