Helllo, and thanks for your reply! Also see my reply to ReneeP. The first doctor I went to in my area said joints like the si joint do not rotate. My sister had already gone through an si joint issue that was traced to her pelvis not rotating properly (si joint disfunction), so I knew he was wrong. But some "old school" orthopedists think this. As I posted to ReneeP, my physical therapist recommended that I wear an SI joint belt to help keep my pelvis in alignment while doing activities other than sitting and sleeping. I would ask your dr and/or physical therapist about this.It is helping retrain my muscles and support proper alignment. It took two years of physical therapy, but my twin sister has now completely solved her si joint alignment problem. I am hopeful if I keep on working with my PT and new orthopedist I will two. Before trying a fusion, I would try PT with someone who specializes in the si joint/pelvis and also ask about seeing if the si joint belt will help you. Thanks again and good luck!!