Citation, DOI, disclosures and article data
Citation:
Benoudina S, Bell D, Kurda D, Gage sign. Reference article, Radiopaedia.org (Accessed on 29 Mar 2024) https://doi.org/10.53347/rID-43858
The Gage sign is a V-shaped lucent defect at the lateral portion of the epiphysis and/or adjacent metaphysis. It is pathognomonic for Legg-Calve-Perthes disease.
It may occur early in the disease and is one of the five indicators of a worse prognosis, which are:
- Gage sign
- calcification lateral to the epiphysis
- lateral subluxation of the femoral head
- horizontal growth plate
- metaphyseal cyst
History and etymology
The sign was described by H Courtney Gage (1886-1947) a British radiologist, in an article in 1933 3; he was Director of Radiology at St Mary's Hospital in London 4.
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1. Wenger DR, Ward WT, Herring JA. Legg-Calvé-Perthes disease. J Bone Joint Surg Am. 1991;73 (5): 778-88. Pubmed citation
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2. Terry R. Yochum, Lindsay J. Rowe. Yochum and Rowe's Essentials of Skeletal Radiology. (2020) ISBN: 9780781739467
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3. Gage HC (1933) A possible early sign of Perthes’ disease. Br. J. Radiol. 1933;6:295-297.
https://doi.org/10.1259/0007-1285-6-65-295
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4. Williams R. Dr. H. Courtney Gage. BJR 1947;20:239, 441-442
https://doi.org/10.1259/0007-1285-20-239-441.
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