Susanne, we wouldn't merge your threads if there are different joints involved. Your "Five Joints and Going Strong" is in the Shoulder Forum and it should stay there. But it would be fine to change the titles on your other joint recovery threads in the knee and hip forums to this same title if you like. You'll just need to tell us that's what you'd like to do.
The best way to do that is go to both threads and post what you'd like the new thread title to be. Follow the instructions Jaycey gave you to find those threads. Let us know if you have difficulty.
It will be great to have an update on how you're doing. We've missed you!