FBI sign

Dr Henry Knipe and A.Prof Frank Gaillard et al.

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

  • fat
  • blood
  • interface
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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

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    Case 1
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    Case 2: ultrasound in patellar fracture
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