Orbital plate of ethmoidal labyrinth
Lamina orbitalis labyrinthi ethmoidei
- Latin synonym: Lamina papyracea
- Related terms: Orbital plate; Orbital plate (Ethmoid; Ethmoidal bone)
Definition
The lateral surface of sphenoid is formed of a thin, smooth, oblong plate called the orbital plate of ethmoidal labyrinth (lamina papyracea; os planum)
The orbital plate of ethmoidal labyrinth covers the middle and posterior ethmoidal cells and forms a large part of the medial wall of the orbit
It articulates above with the orbital plate of the frontal bone, below with the maxilla and orbital process of the palatine, in front with the lacrimal, and behind with the sphenoid.
Text by Antoine Micheau, MD - Copyright IMAIOS
