Billy it COULD be causing your foot drop. I'm not saying it IS, but it could be. You've got some SEVERE stenosis in places, plus some SEVERE disc space narrowing in places too. So there ARE issues that could be causing foot drop.
A Neurosurgeon could tell you for sure. But don't think that this ISN'T causing the foot drop because it very well could be. Make SURE that you ask about it, okay?
Also, make sure you take the most conservative option you can as far as what they intend to do. Let us know what the doctors say, will you Billy? I'd really like to know. Take care & God bless. Hugs, Lee