Signet ring sign (scaphoid)

Last revised by Leonardo Lustosa ◉ on 24 Aug 2024

Citation, DOI, disclosures and article data

Citation:

Hacking C, Lustosa L, Campos A, et al. Signet ring sign (scaphoid). Reference article, Radiopaedia.org (Accessed on 30 Mar 2025) https://doi.org/10.53347/rID-159962

DOI:

https://doi.org/10.53347/rID-159962

Permalink:

https://radiopaedia.org/articles/159962

rID:

159962

Article created:

10 Jan 2023, Craig Hacking ◉

Disclosures:

At the time the article was created Craig Hacking had the following disclosures:

Philips Australia, Paid speaker at Philips Spectral CT events (ongoing)

These were assessed during peer review and were determined to not be relevant to the changes that were made.

View Craig Hacking's current disclosures

Last revised:

24 Aug 2024, Leonardo Lustosa ◉

Disclosures:

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

View Leonardo Lustosa's current disclosures

Revisions:

6 times, by 6 contributors - see full revision history and disclosures

Systems:

Musculoskeletal

Sections:

Signs

Tags:

refs, cases, case2, snippet

Synonyms:

Cortical ring sign

The signet ring sign, cortical ring sign, or just ring sign refers to the rounded cortex of the scaphoid tubercle on an AP or PA wrist radiograph due to rotatory subluxation from flexion of the scaphoid. It is seen in injuries of the scapholunate ligament (scapholunate dissociation) and the related perilunate and lunate dislocations but can be seen in normal wrist radiographs ^1,2.