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Os naviculare

Case contributed by Shailaja Muniraj
Diagnosis certain

Presentation

Foot pain. No history of trauma

Patient Data

Age: 40 years
Gender: Female
x-ray

There is a well defined accessory bone noted adjacent to the posteromedial tuberosity of navicular bone. No evident bony union.

Small bony island noted in the proximal phalanx of great toe.

No other abnormality identified. 

Case Discussion

Os navicularis is an incidental finding and seen within the posterior tibialis tendon.

In symptomatic patients, MRI may help in assessing the tibialis posterior tendon / fluid around its sheath and cartilagnious connection between the accessory ossicle and navicular none.

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