It feels like a bone is actually out of place or something and the support of my
foot bones is missing. If I have actually put weight on the
foot it will drop me. The pain is excruciating. I wiggle the foot around a little (ouch!) and then something clicks very lightly and the pain disappears almost instantly.
I suspect it's something as minor as a tendon that has slipped out of its groove, but boy it hurts!
I have had that thing happen for many years, long before the MS.