Steinberg sign (Marfan disease)

Dr Dan J Bell and A.Prof Frank Gaillard et al.

The Steinberg sign, also known as the thumb sign, is one of the clinical examination tests for Marfan disease in the hands. It is a clinical test in which the tip of the thumb is visible medial to the little finger when it is clasped in the clenched hand. 

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Article information

rID: 50242
Section: Signs
Synonyms or Alternate Spellings:
  • Thumb sign (Marfan's disease)

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