Pooping duck sign

Last revised by Ayush Goel ◉ on 21 Nov 2022

Citation, DOI, disclosures and article data

Citation:

Skalski M, Goel A, Niknejad M, et al. Pooping duck sign. Reference article, Radiopaedia.org (Accessed on 04 Oct 2023) https://doi.org/10.53347/rID-57110

DOI:

https://doi.org/10.53347/rID-57110

Permalink:

https://radiopaedia.org/articles/57110

rID:

57110

Article created:

7 Dec 2017, Matt Skalski ◉

Disclosures:

At the time the article was created Matt Skalski had no recorded disclosures.

View Matt Skalski's current disclosures

Last revised:

21 Nov 2022, Ayush Goel ◉

Disclosures:

At the time the article was last revised Ayush Goel had no financial relationships to ineligible companies to disclose.

View Ayush Goel's current disclosures

Revisions:

5 times, by 4 contributors - see full revision history and disclosures

Systems:

Musculoskeletal, Trauma

Sections:

Signs

Tags:

signs

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).