My retired partner, Dr Jane Denton, known world wide of the Denton Modification for over supination, continuously used this metatarsal stiffener. It is a 1/16 to 1/8 inch thickness of out sole material. All chronic pain in the area may be helped with this shoe modification. When patients tell you that they feel better as the shoe stiffness increases, this may be something that a shoe cobbler can add to a more flexible shoe. It should be done on both sides (even if the pain is on one side). It can always be removed if not helpful, or after the need for stiffness passes.
1/8 inch Stiff Out Sole Material Applied to Add Stiffness for Painful Metatarsals
The Stiffness has to be created with 1/16 to 1/8 inch Material only. This increases someone's falling odds due to separating the ground from the foot, so has to be broken in to gradually. The patients that it works for are really pleased that they can wear some normal looking shoes.