Hi, I'm new to this site. I just got some x-ray reports back. I have a ruptured disc at the L5/S1. But, the report had pars defect involving the left L5 pars interarticularis, facet set arthritis. I am getting ready to surf the web and see what I can find out. I feel for you. Hope you have a better day. I will get back with you, when I find something out.