Zygomaticomaxillary (tripod) fracture

Background

• Must distinguish Zygomatic Arch Fracture from Zygomaticomaxillary (Tripod) Fracture
  • Tripod fx = fx of zygomatic arch, lat and inf orbital rims, lat wall of maxillary sinus

Diagnosis

1. Fx through:
   1. inferior orbital rim
   2. lateral orbital wall
   3. zygomatic arch
2. Must r/o associated ocular injuries
3. Usually requires admission and surgical repair

Differential Diagnosis

Maxillofacial Trauma

• Ears
  • Auricular hematoma
• Nose
  • Nasal fracture
  • Nasal septal hematoma
• Oral
  • Dental trauma
  • Lip laceration
  • Tongue laceration
• Other face
  • Le Fort fractures
  • Mandible fracture
• Zygomatic arch fracture
• Zygomaticomaxillary (tripod) fracture
• Related
  • Head trauma (main)
    • Skull fracture
    • Skull fracture (peds)
    • Basilar skull fracture
  • Orbital trauma
    • Eyelid laceration
  • Scalp laceration

Disposition

• Loss of vision or displacement: admit for IV abx and surg

See Also

• Maxillofacial Trauma
• Zygomatic Arch Fracture

Source

Tintinalli's