Accessory Navicular Bone

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Accessory navicular bone. An accessory navicular is a large accessory ossicle that can be present adjacent to the medial side of the navicular bone. An accessory navicular bone also called os tibiale externum occasionally develops in front of the ankle towards the inside of the foot. This is a congenital condition and is present at birth.

What is accessory navicular. Accessory Navicular which is also known by the name of os navicularum is the name given to an extra bone or a piece of cartilage which is normally found on the inner side of the foot just above the arch. There is a higher incidence in women and the finding might be bilateral in 50-90.

The accessory navicular os navicularum or os tibiale externum is an extra bone or piece of cartilage located on the inner side of the foot just above the arch. Three distinct types of accessory navicular bones have been described. Some people might be painful because of trauma straining exercises and uncomfortable shoe irritation.

Accessory navicular syndrome is the result of an extra bone or piece of cartilage alongside the navicular bone. What is the Accessory Navicular. ACCESSORY NAVICULAR The accessory navicular is an accessory bone that is also called the accessory scaphoid prehallux os tibiale os tibiale externum naviculare secundarium and navicular secundum.

The tibialis posterior tendon often inserts with a broad attachment into the ossicle. Up to 25 percent of individuals are born with the accessory navicular. The accessory navicular os navicularum or os tibiale externum is an extra bone or piece of cartilage located on the inner side of the foot just above the arch.

It was initially described by Bauhin in 1605. This entity is usually asymptomatic although populations with medial foot pain have a higher prevalence. Type 1 is a small sesamoid bone embedded within the distal portion of the posterior tibial tendon.