Codman triangle periosteal reaction

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

The Codman triangle may be seen with aggressive lesions:

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

EtymologyHistory and etymology

It was first described by Ribbert in 1914 ².

-</ul><h4>Etymology</h4><p>It was first described by <strong>Ribbert </strong>in 1914 <sup>2</sup></p><h4>See also</h4><ul><li><a href="/articles/periosteal-reaction">Periosteal reaction</a></li></ul>
+</ul><h4>History and etymology</h4><p>It was first described by <strong>Ribbert </strong>in 1914 <sup>2</sup>.</p><h4>See also</h4><ul><li><a href="/articles/periosteal-reaction">Periosteal reaction</a></li></ul>

References changed:

2. Desai RV, Jain V, Katariya S. Codman's triangle in tubercular osteomyelitis. J Postgrad Med. 2002;48 (2): 157-8. <a href="http://www.ncbi.nlm.nih.gov/pubmed/12215708">Pubmed citation</a><span class="auto"></span>
2. JACK EDEIKEN et.al, NEW BONE PRODUCTION AND PERIOSTEAL REACTION, AJR Vol 97, 708-718, 1966

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Codman triangle periosteal reaction

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EtymologyHistory and etymology

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