Medial Orbital Wall Anatomy - rogerbradburyphotography.com

A useful mnemonic to remember the bones forming the medial wall of the orbit is: My Little Eye Sits in the orbit; or Medial Layer Eye Socket Mnemonic M: maxilla frontal process L: lacrimal E: ethmoid lamina papyracea S: sphenoid bod. Apr 18, 2019 · The medial orbital wall. The medial walls of the orbits are approximately parallel to each other and to the mid-sagittal plane. The medial wall is composed largely of the lamina papyracea of the ethmoid bone Figure 3.4. This thin plate is exceptionally fragile, measuring only 0.2–0.4 mm in thickness, and separates the orbit from air cells of the ethmoid sinus labyrinth. Placement of implant to reproduce the anatomic position of the medial orbital wall: The implant margins should rest on secure bony ledges surrounding the defect tapering posteriorly to avoid abutting the optic nerve. Endoscopic endonasal visualization can be useful to ensure correct placement. Jan 30, 2016 · Medial Orbital Wall The medial orbital wall consists of four bones: the sphenoid lesser wing, maxillary, ethmoid, and lacrimal bones. The medial orbital wall is the thinnest wall of the orbit; the lamina papyracea is the paper-thin aspect of the medial orbital wall.

Orbital Medial Wall Fractures Etiology. Fractures of the medial orbital wall result from blunt trauma to the periorbital area. The condition can result from traffic accidents, sports activities, violence or fall injuries. Medial wall fractures can occur alone or as part of a complex fracture. Orbital floor fractures are frequently associated with medial wall fractures. The complex geometry of the bony orbit makes anatomical reconstruction extremely challenging, particularly in two-wall fractures and when the deep orbital cone is affected. The orbital floor has an initial shallow convex section behind. Dec 14, 2016 · Gross anatomy Dimensions Depth ≈ 42 mm along medial wall ≈ 50 mm along lateral wall Intraorbital width – distance between medial margins of both orbits ≈ 25 mm Extraorbital width – distance between lateral margins of both orbits ≈ 100 mm Orbital index = height / width ×100 >89 – megasenes orientals 83 – 89 – mesosenes.

Jun 02, 2014 · The aim of this article is to investigate a retrocaruncular approach for repairing medial orbital wall fractures. A total of 10 fresh cadaver orbits were dissected to investigate a transconjunctival approach to the orbit posterior to the caruncle. Medical. The medial wall is built out of four bones: the maxilla, lacrimal bone, ethmoid bone, and sphenoid bone. A useful mnemonic to remember them is, “ M y L ittle E ye S its.” The majority of the wall is made out of the orbital plate of the ethmoid bone, which is located posterosuperiorly on the wall.

Orbital process of the frontal bone anterior superior portion Lesser wing of the sphenoid postero-medial portion Inferior wall: Orbital process of the frontal bone Orbital process of the zygomatic bone. Sphenoid bone. Superior orbital fissure lies between the lesser and the greater wing of sphenoid. This fissure allows the passage to the nerves III, IV, VI, branches of the V1 and ophthalmic veins. Medial wall The uninjured medial orbital wall has a bulge towards the orbital contents to be reconstructed. This can be particularly challenging when the medial wall fracture extends posteriorly. Note: the extent of the reconstruction required for this medial wall fracture.

Medial Orbital Wall Anatomy

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