Accessory Navicular Bone Condition

An accessory navicular bone is a congenital anomaly of the foot. Most patients with this condition are asymptomatic (affects only one foot) In some patients, the accessory bone causes localized pain because is rubs against the shoe.

In these cases a change in footwear to accommodate the osseous bump may be all that is required. A custom molded biomechanical orthotic is usually needed to support the medial longitudinal arch. Due to the accessory bone the medial longitudinal arch is functionally longer and needs this support. It is estimated that approximately 15% of these patients have surgery and a cast is required for 6 weeks.

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