UMEM Educational Pearls

Category: Orthopedics

Title: Triquetral fractures

Keywords: x-ray, fracture, wrist (PubMed Search)

Posted: 7/26/2015 by Brian Corwell, MD
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Triquetral fractures are the 2nd most common carpal fractures (scaphoid).

Dorsal surface most commonly.

Usually occur from impingement from the ulnar styloid, shear injury or from ligamentous avulsion.

XR: best seen on the lateral projection

Remember this injury/radiographic appearance the next time you see an avulsion fracture dorsal to the proximal row of carpal bones on the lateral film but are unsure of the donor site.