Presentation
Work up for trauma.
Patient Data
Age: 50 years
Gender: Female
From the case:
Os triangulare
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There is a well-corticated bony fragment distal to the ulnar fovea, adjacent to the ulnar styloid, most consistent with accessory ossicle.
Case Discussion
Features are most compatible with a os triangulare, an accessory ossicle located between the ulnar styloid, lunate and triquetrum.