Orbital Roof Bones

It is a thin lamina separating the orbit anteriorly from the frontal sinus and posteriorly from the anterior cranial fossa.

Orbital roof bones.

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. Most commonly patients will report a recent history of trauma to the head and or face. Fractures of the roof of the orbit are typically associated with trauma to the forehead frontal bone are. The bony orbit refers to the bones that constitute the margins of the orbits that is the roof medial and lateral walls and floor.

Orbital roof fractures disease entity. 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. Inferior orbital fissure lies between the greater wing of sphenoid the orbital process of the maxillary bone and laterally the zygomatic bone. The roof or superior wall of the orbit separates the orbit from the anterior cranial fossa.

There are 7 bones that comprise the orbit. 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. The lesser wing of the sphenoid bone forms the posterior aspect of the orbital roof.

The orbital margin or rim refers to the anterior circular margin of the orbit. The superior bony margin of the orbital rim otherwise known as the orbital process is formed by the frontal bone. Superior orbital fissure lies between the lesser and the greater wing of sphenoid. The orbital plate of the frontal bone forms the anterior aspect of the orbital roof.

After a thorough. The orbital roof is formed by two bones.