Tripod fracture

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The tripod fracture, also called the zygomaticomaxillary complex or malar fracture, is composed of a set of fractures including the lateral orbital wall, inferior orbital floor, and the zygomatic arch.

Cause:

  • direct blow to malar eminence

Clinical features:

  • facial bruising/swelling
  • flattened malar eminence
  • loss of facial sensation below orbit (infraorbital nerve involvement)
  • trismus / altered mastication
  • diplopia +/- ophthalmoplegia

Fracture line:

  • laterall wall of maxillary sinus
  • orbital rim +/- infraorbital foramen
  • orbital floor
  • zygomatico-frontal suture / zygomatic arch

[1]

[edit] References

  1. ^ Radiology, University of Rochester Medical Center [http://www.urmc.rochester.edu/smd/rad/neurocases/Neurocase191.htm <ref>Facial and Mandibular Fractures, University of Washington [http://www.rad.washington.edu/mskbook/facialfx.html] </li></ol></ref>
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