Accessory navicular bone

Case contributed by Dr Matthew Lukies

Presentation

Inversion injury of the right foot with medial tenderness.

Patient Data

Age: 12 years
Gender: Female
X-ray
  • No acute fracture or dislocation
  • Type II accessory navicular bone with mild adjacent soft tissue edema

Case Discussion

An accessory navicular bone, also referred to as os naviculare accessorium, is a relatively common anatomical variant present in around 10% of people. Although usually asymptomatic, an accessory navicular bone can cause medial foot pain called os naviculare syndrome.

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