Jen, I'll do some more looking around for images that might display the most probable areas where referred/radiating pain from the SI Joints could happen. It'll likely take me a couple of days to more searching .

I might also have some images in materials my doctors had given me. If so, I'll scan those and post 'em.

For me, I know the pain is a pain in the ... y'know what.

I think that my bone and CT scans were the most telling - for surgeons - along with the films taken during procedures.