Os supranaviculare

Case contributed by Mostafa Elfeky
Diagnosis almost certain

Presentation

Right little toe trauma.

Patient Data

Age: 16 years
Gender: Male
x-ray

No fracture detected.

A well-corticated bony fragment at the supero-dorsal aspect of the right navicular bone, in keeping with an incidental os supranaviculare. 

Case Discussion

There is an accessory ossicle located at the supero-dorsal aspect of the navicular bone, a typical location of os supranaviculare. As the other accessory ossicles in the body, it is considered a normal variant that is usually asymptomatic.

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