I am doing that now with a shoulder, they all want to replace it and I am just kind of trying to be smart about using it. Even with the success of my knee replacement I am reluctant to replace the shoulder. The pain isn’t even in the same time zone.
When I had my shoulder issues, I was told by several that a shoulder replacement was the longest recovery than any other joint.
Just keep doing what you're doing and be smart about it...JMO.