Accessory Navicular Syndrome
Accessory navicular syndrome is the aggravation of the accessory navicular or the posterior tibia tendon. Only about 10 percent of individuals have an accessory navicular, an extra piece of bone or cartilage located on the inner side of the foot and attacked to the posterior tibia tendon. The condition can occur when shoe irritation, overuse, or injury cause aggravation.
Symptoms: Many people who have an accessory navicular are not aware of it, because they never experience any symptoms. Signs that there is aggravation include redness, swelling, throbbing or pain in the arch of the foot, or a visible bony area on the midfoot.
Non-Surgical Treatments: Non-surgical approaches to accessory navicular syndrome involve managing symptoms. Ice can be used to reduce swelling, and medications can be taken to reduce inflammation and pain. Physical therapy can strengthen the muscles and foot orthotics can support the arch. Your doctor might also suggest a cast or walking boot to reduce inflammation and allow the foot to heal.
Surgery: If non-surgical methods do not relieve symptoms, surgery may be used to remove the accessory bone and reshape the area.