Facial bone - Anatomy OM view

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Facial bone - Anatomy OM view

  • Familiarity with facial bone anatomy is required for accurate interpretation
  • Comparing the injured with the non-injured side is often informative

Facial bone - Anatomy OM30 view

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Facial bone - Anatomy OM30 view

  • (Same patient as image above)
  • Soft tissue swelling is seen on this view (also evident clinically)
  • There is no underlying fracture

Facial bones systematic approach - OM30 view

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Facial bones systematic approach - OM30 view

  • Following McGrigor-Campbell lines provides a systematic approach when looking for facial bone fractures

McGrigor-Campbell lines

  • Upper line - (Red) passes through the zygomatico-frontal sutures (asterisks) and across the upper edge of the orbits
  • Middle line - (Orange) follows the zygomatic arch (elephant's trunk), crosses the zygomatic bone, and follows the inferior orbital margins to the opposite side
  • Lower line - (Green) passes through the condyle (1) and coronoid process (2) of the mandible and through the lateral and medial walls of the maxillary antra on each side