Presentation
Wrist pain after trauma.
Patient Data
Age: 30 years
Gender: Female
From the case:
Os triangulare
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There is a well-corticated accessory ossicle with the sclerotic border between the ulnar styloid, triquetrum and pisiform.
Case Discussion
Os triangulare may be unilateral or bilateral and the main differential diagnosis is non-union of an ulnar styloid process fracture.