What is the Papyracea?
The orbital lamina of ethmoid bone, (or lamina papyracea or orbital lamina) is a smooth, oblong bone plate which forms the lateral surface of the labyrinth of the ethmoid bone in the skull. The plate covers in the middle and posterior ethmoidal cells and forms a large part of the medial wall of the orbit.
Where is lamina papyracea found?
ethmoid bone
The lamina papyracea, also known as the orbital lamina of the ethmoid bone, is the principal component of the medial wall of the orbit, and also the lateral surface of the ethmoid air cells.
What is right lamina papyracea fracture?
Blow-out fractures occur when a blow to the eye increases pressure in the orbit, causing the weak floor or medial wall (lamina papyracea) to “blow out” into the maxillary sinus or ethmoid bone. [3, 4, 5, 6, 7, 8, 9] This results in a fracture, though it often prevents globe rupture and loss of the eye.
What is orbit of the eye?
The orbit is the bony cavity in the skull that houses the globe of the eye (eyeball), the muscles that move the eye (the extraocular muscles), the lacrimal gland, and the blood vessels and nerves required to supply these structures.
What is Infundibulum of nose?
The ethmoid infundibulum is a curved cleft of the ethmoid bone which leads into the anterior portion of the hiatus semilunaris. It is bordered medially by the uncinate process and laterally by the orbital plate of the ethmoid.
How do you treat an orbital fracture?
How Are Orbital Fractures Treated? For many orbital fractures, surgery is not necessary. Your ophthalmologist may recommend the use of ice packs to reduce swelling, along with decongestants and antibiotics.
Is ethmoid a flat bone?
Irregular Bones. They consist of cancellous tissue enclosed within a thin layer of compact bone. The irregular bones are: the vertebræ, sacrum, coccyx, temporal, sphenoid, ethmoid, zygomatic, maxilla, mandible, palatine, inferior nasal concha, and hyoid.
What does the sphenoid bone look like?
The sphenoid bone is one of the seven bones that articulate to form the orbit. Its shape somewhat resembles that of a butterfly or bat with its wings extended.
