Well, I had the MRI done at UT. It pretty much confirmed what we already know and there were no surprises. The diagnosis of arthritic stenosis stands. At least it explains why my legs wouldn't work. There's a lot of information about it on the internet. I'll find out more from the docs in a couple of weeks. The number of people who have reached out has been helpful. Here are some of the more helpful websites that I've found so far.
National Institute of Health
This site has good information and a diagram to follow. It covers who gets it and what some of the causes are. Injuries are one of the causes and other causes are also listed.
This blog has been helpful to understand more about the disease. Reading the blog opened me eyes to the fact that stenosis can occur in children. There seems to be some good background included on the blog.
Generally, information from the doctors and a little research lead to empowerment. I don't know where this is all going to lead but we'll see. It'll be one day at a time but I'm going to do my best to not let it slow me down. :-)