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FBI sign (lipohemarthrosis)

The FBI sign is an acronym referring to the components that form a lipohemarthrosis. It stands for:

  • fat
  • blood
  • interface

Article information

rID: 7510
Section: Signs
Tag: stub, refs, cases
Synonyms or Alternate Spellings:
  • Fat blood interface sign

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Cases and figures

  • Case 1
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  • Case 2: ultrasound in patellar fracture
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  • Case 3
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