One of the more uncommon conditions that can affect a foot is accessory navicular syndrome.
This syndrome can only develop within an individual who has the accessory navicular bone, which is an extra piece of cartilage or bone that can be situated on the inner portion of the foot right above the foot arch. This bone is present at birth, and most people don’t have it and therefore cannot suffer from accessory navicular syndrome.
If you have this bone in your foot, it’s important that you know what the accessory navicular syndrome is so that you can be prepared if ever you become affected by it.

