Os triangulare

Case contributed by Mostafa Elfeky
Diagnosis almost certain

Presentation

Fall on left hand.

Patient Data

Age: 12 years
Gender: Female
x-ray
Frontal
Lateral
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Info

Buckle fracture at the distal radius metaphysis.

An accessory ossicle is seen distal to the ulnar styloid process, representing os triangulare.

Case Discussion

Os triangulare is an accessory ossicle between the ulnar styloid process and triquetrum.

Buckle fracture is an incomplete fracture, commonly seen involving the distal radial metaphysis.

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