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Accessory navicular bone

Case contributed by Mohammad Farghali Ali Tosson
Diagnosis almost certain

Presentation

Pain of the sole of the foot.

Patient Data

Age: 30 years
Gender: Male
ct

Two separated bony fragments seen inferior and medial to the navicular bone with smooth well-corticated margins. Appearances consistent with bipartite accessory navicular bones.

Case Discussion

Bipartite accessory navicular (os tibiale externum); it is a Geist type 2.

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