Apart from the obvious cheep jokes I could put down with your simplistic question, I think I would like to know some history.
Not only medical but what has this foot been wearing of late. Also some ROMs would be good.
The other foot - don't want to ignore it.
It is a classic charcot related deformity (not necessarily diabetes related).
It will need some off loading for sure. How to .. and materials...and the footwear...?