Pooping duck sign

Dr Kieran Kusel and Dr Matt Skalski et al.

Pooping duck sign indicates the presence of a triquetral fracture on a lateral wrist radiograph, where an avulsed fracture fragment from the dorsal cortex of the triquetrum projects along the dorsal aspect of the osseous structures of the wrist.

In this sign, the fracture fragment represents the poop dorsal to the duck. The duck is created by the confluence shadows from osseous structures in the proximal carpal row, including: the scaphoid (head and neck of the duck), lunate (body and wings of the duck), and dorsal cortex of the triquetrum (tail of the duck). 

Inspired signs

Article information

rID: 57110
Section: Signs
Tag: signs
Synonyms or Alternate Spellings:

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Cases and figures

  • Figure 1 - illustration
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  • Case 1: Triquetral bone fracture
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