Good Lord Hope, that sounds very serious. As you know, we are not docs, just a group of spine patients from all over the world. But from my layman's perspective, falling down demands the attention of the right doctor ASAP! It could be a spinal nerve issue, or something else. Given your spine history, what does your spine doc say about it? Your PCP?
It was nice talking to you last week. After our chat, I checked to see if I could find a few good references on "spondylosis" and found what appears to be a useful overview; see this
link. There are other references, but I like the picture and overview...
Given this problem, it's quite likely that you MAY be disqualified from ADR, but talk to your doctor(s) about this issue. We can chat again later this week.
BTW: Nerve studies suck. Has anyone every found good diagnostic information from them? Or is it just too much fun to torture us...and send us the bill?
