I believe that drop foot is the leymans term for this and was the direction I was thinking. It, I believe is neuro and could be from the spine, I am only a doctor when there is a neked lady and here on ODT.Well, I Googled it and the brace looks like it would be a good idea. My right foot tries to turn inward. It actually draws inward and when trying to walk, it will cause you to roll your ankle if you ain't paying attention
Hope you heal and find the right doctors who can not only find the problem but fix it.
Tony