Zygomatic arch fracture


  • Must distinguish zygomatic arch fracture from Zygomaticomaxillary (tripod) fracture
    • Tripod fracture = fracture of zygomatic arch, lateral and inferior orbital rims, and lateral wall of maxillary sinus

Clinical Features

  • Flattening of malar eminence
  • Ipsilateral eye may appear to tilt due to pulling of lateral canthus
  • Trismus (due to masseter spasm or impingement of temporalis muscle or coronoid process)
    • Palpate posterior surface of arch for tenderness/loss of space compared to other side

Differential Diagnosis

Maxillofacial Trauma


  • CT Sinus/Face


  • Analgesia
  • If concomitant sinus fracture, prophylactic antibiotics are indicated (amoxicillin-clavulanate, doxycycline, or clindamycin)


  • Discharge
  • Outpatient plastic surgery follow-up in 1 week

See Also

  • Maxillofacial Trauma


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