There is a condition called Charcot foot:
http://en.wikipedia.org/wiki/Neuropathic_arthropathy
I would see a doctor ASAP to prevent further damage.
Perhaps a brace or splint of some type could help, if you are
developing some deterioration in the joint, from this, or some other inflammatory process.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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