Background:
Bunion deformity can give rise to not only disabling bunion pain but also elsewhere in the foot, leg and even low back. It is therefore important to understand how and why they can be affected by the bunion problem or more accurately the impaired foot function in order to find a proper solution for them.
What is metatarsalgia?
Metatarsalgia is the pain under mid-metatarsal region of the forefoot just behind the second and third toe joints. It feels like walking on a pebble in the shoes. It is usually associated with thickening calluses in the same area.
Why is there callus and pain under the mid-metatarsal heads area of bunion feet?
The reason is twofold. Firstly and structurally, transverse metatarsal arch of the forefoot collapses due to destabilization/hypermobility of first metatarsal bone of bunion feet and thus increased contact pressure of the mid-metatarsal heads of a flat/collapsed metatarsal arch against the ground in walking. The other reason is the abnormal lateral shift of pressure/force to the mid metatarsal region for walking after gradual loss of the critical big toe function.
Can the non-bone-breaking syndesmosis procedure resolve the metatarsalgia problem for a bunion foot and why?
Syndesmosis procedure has been proven capable of re-aligning and re-stabilizing the first metatarsal consistently to restore the transverse metatarsal arch and also function of the great toe to spare mid metatarsal heads from undue pressure/force in walking.
Are there any clinical evidence that the pressure and force is reduced under the mid metatarsal heads after syndesmosis procedure?
Yes, firstly, any preoperative metatarsalgia has been consistently diminished or disappeared after syndesmosis procedure. secondly, metatarsal calluses have also markedly reduced or disappeared. Thirdly, no additional surgery such as Weil osteotomy (break-n-shift of the 2nd and 3rd metatarsals has been needed. Fourthly, plantar pressure study by F-Scan® has also demonstrated significant and consistent migration of forefoot metatarsal pressure in walking from the painful mid-metatarsal region of bunion feet to under the first metatarsal head where it should normally be.
Reference information: http://www.bunioncenter.com/bunion/metatarsalgia.html
It is not intended as medical advice to any specific person. If you have any need for personal advice or have any questions regarding your health, please consult your Orthopedist for diagnosis and treatment.
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