Spinal stenosis and EDS?

I was curious if there is any evidence of EDS resulting in Spinal Stenosis. My spine has changed a lot in just 4 years. I can't walk over 2 minutes without severe left leg lateral thigh pain. If I stop for a bit, I can then keep going. It sounds like neural claudication, but the Neuro-surgeon said I'm fine!! Others have said possible Spinal Fusion. I also have SI Joint Dysfunction. Has anyone heard of this and has anyone had a Spinal Fusion?