Isolated zygomatic arch fracture

Due to blow from side of face
Clinicaly flat lateral cheek area and unable to open mouth
Impingement of zygomatic arch fragment on coronoid process of mandible or temporalis muscle
Radiologically the 'elephant of Rogers' is broken

Image Gallery:

Right zygomatic arch fracture:
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Obvious right zygomatic arch fracture: Drawing over the face shows normal elephant trunk on the left side and broken elephant trunk on the left.
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The same radiograph without drawing
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