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Medical Term:

orbitomeatal plane



  1. a line approximating the base of the cranium, passing from the infraorbital ridge to the midline of the occiput, intersecting the superior margin of the external auditory meatus; the cranium is in the anatomic position when the base line lies in the horizontal plane and right and left sides are level.
  2. a standard craniometric reference plane passing through the right and left porion and the left orbitale; drawn on the profile radiograph or photograph from the superior margin of the acoustic meatus to the orbitale.

Synonym(s): auriculoinfraorbital plane, eye-ear plane, Frankfort horizontal plane, Frankfort plane, infraorbitomeatal plane

© Copyright 2016 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.