Orbital Roof Bones

The bony orbit refers to the bones that constitute the margins of the orbits that is the roof medial and lateral walls and floor. The orbital margin or rim refers to the anterior circular margin of the orbit. Most commonly patients will report a recent history of trauma to the head and or face.

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The floor inferior wall is formed by the orbital surface of maxilla the orbital surface of zygomatic bone and the minute orbital process of.

Orbital roof bones.

Superior orbital fissure lies between the lesser and the greater wing of sphenoid. The roof or superior wall of the orbit separates the orbit from the anterior cranial fossa. Orbital roof fractures disease entity. The roof superior wall is formed primarily by the orbital plate frontal bone and also the lesser wing of sphenoid near the apex of the orbit.

It is a thin lamina separating the orbit anteriorly from the frontal sinus and posteriorly from the anterior cranial fossa. Fractures of the roof of the orbit are typically associated with trauma to the forehead frontal bone are. Inferior orbital fissure lies between the greater wing of sphenoid the orbital process of the maxillary bone and laterally the zygomatic bone. There are 7 bones that comprise the orbit.

It is our job as ophthalmologists to be able to readily identify these bones and know pretty much every bump notch hole and contour of these bones and what structures pass through travel along and attach to these bones. The orbital plate of the frontal bone forms the anterior aspect of the orbital roof. The lesser wing of the sphenoid bone forms the posterior aspect of the orbital roof. The superior bony margin of the orbital rim otherwise known as the orbital process is formed by the frontal bone.

This fissure allows the passage to the nerves iii iv vi branches of the v 1 and ophthalmic veins. The orbital roof is formed by two bones. The orbital roof is composed of the orbital plate of the frontal bone with a small contribution from the lesser wing of the sphenoid at the apex figures 3 4 and 3 5. After a thorough.

The largest contributor of the roof is the orbital part of the frontal bone while the small posterior portion is completed by the lesser wing of the sphenoid bone. The orbital surface presents medially by trochlear fovea and laterally by lacrimal fossa.

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