Lipohemarthosis

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[edit] Discussion

  • Lipohemarthrosis results from the extrusion of fat and blood from bone marrow into the joint space after an intraarticular fracture.
  • Lipohemarthrosis is most common in knee fractures, especially tibial plateau fractures.

[edit] Imaging Findings

  • Because fat floats on the associated blood, a fat-fluid level is present and may be shown on radiographs when the image is taken with a horizontal beam.
  • Both CT and MRI can provide a more specific assessment than conventional radiography of the composition of joint effusions.

[edit] Images

Patient #1: Lateral tibial plateau fracture

Patient #2: MRI image demonstrates an ankle lipohemarthrosis

[edit] See Also

[edit] External Links

[edit] References