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Codman triangle periosteal reaction

Last revised by Matt Skalski ◉ on 10 Feb 2024

Citation, DOI, disclosures and article data

Citation:

Amini B, Skalski M, Lustosa L, et al. Codman triangle periosteal reaction. Reference article, Radiopaedia.org (Accessed on 11 Dec 2024) https://doi.org/10.53347/rID-1142

DOI:

https://doi.org/10.53347/rID-1142

Permalink:

https://radiopaedia.org/articles/1142

rID:

1142

Article created:

2 May 2008, Behrang Amini

Disclosures:

At the time the article was created Behrang Amini had no recorded disclosures.

View Behrang Amini's current disclosures

Last revised:

10 Feb 2024, Matt Skalski ◉

Disclosures:

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

View Matt Skalski's current disclosures

Revisions:

20 times, by 16 contributors - see full revision history and disclosures

Systems:

Musculoskeletal

Sections:

Gamuts, Signs

Tags:

refs

Synonyms:

Codman's triangle
Codman's triangles
Codman triangles

A Codman triangle is a type of periosteal reaction seen with aggressive bone lesions. The periosteum does not have time to ossify with shells of new bone (e.g. as seen in a single layer and multilayered periosteal reaction) in aggressive lesions, so only the edge of the raised periosteum will ossify.

The Codman triangle may be seen with the following aggressive lesions:

osteosarcoma
Ewing sarcoma
osteomyelitis
active aneurysmal bone cyst
giant cell tumour
metastasis
chondrosarcoma (especially juxtacortical chondrosarcoma)
malignant fibrous histiocytoma

History and etymology

It was first described by Ribbert in 1914 ². However, it is named after the American surgeon Ernest Amory Codman (1869-1940), who described it in the setting of Ewing sarcoma ^3,4.

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Codman triangle periosteal reaction

Citation, DOI, disclosures and article data

History and etymology

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