What is an Accessory Navicular? What are the symptoms of Accessory ...

[Pages:1]Accessory Navicular

What is an Accessory Navicular?

The navicular is the bone at the top of the arch on the inside of the foot. The navicular is the point of attachment for the posterior tibial tendon, which supports the arch. In approximately 10% of the population there is an accessory navicular, an extra navicular bone. Usually the accessory navicular is not large enough to cause symptoms.

What are the symptoms of Accessory Navicular?

Feet associated with the accessory navicular are usually flat footed, or overpronated. The accessory navicular can be prominent causing friction with footwear. The posterior tibial tendon can become overstretched causing tendonitis or inflammation between the two fragments of the navicular.

What podiatric treatments are available for an Accessory Navicular?

Rest--Initially rest is recommended to allow inflammation to resolve. Ice--Icing may be effective in reducing pain and inflammation. Orthoses--Long-term treatment for a symptomatic accessory navicular is orthotic therapy. Orthoses correct the biomechanical causes of overpronation as well as relieving pressure from the arch and tension on the posterior tibial tendon. Surgery--A small proportion of patients may not have all symptoms relieved by

orthotic therapy. Surgical removal of the enlarged navicular may be required to provide relief.

Please note: The information in this document should not be used as a substitute for podiatric or medical attention.

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