I don't know about you, but my walking talents tend to alter daily. At first I thought it was all about shoe choice. I have to wear flats of some sort that fit snugly to my foot and not allow any "flopping". That theory felt right, but when I realized that wearing the same shoe on consecutive days didn't necessarily work , I had to reevaluate my ward robe and activity decisions.
One very strange thing I have noticed about walking comfortably is the texture on which I rest my feet. Until a year or so ago, the closest shopping mall had tiled or "hard" floors, making walking not as hazardous as some shopping areas. When the mall owners revamped and changed the main walking space between individual stores with a rugged indoor/outdoor type carpeting, I could no longer walk without stumbling. I now hate going to the mall more now than I ever did. By the time I travel from one end of the building to the other,I am totally wiped out, in pain, dizzy, and feeling 100% disabled. And it doesn't help when my panic reaches desperate lengths in not knowing where the nearest rest facility is located...like...RIGHT NOW!
Foot drop has probably been my most consistent MS symptom. Even on the rare occasion I do not use a cane and actually feel confident with placing one foot in front of the other, I am on code red alert. It is not unheard of for me to just fall over with no provocation at all. My body tends to do what ever the h-e-double hockey sticks it wants.
And now...someone else's research...
MS walking problems are unique to each patient