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Inferior orbital fissure location

Inferior orbital fissure Radiology Reference Article

Inferior orbital fissure. The inferior orbital fissure ( IOF) lies in the floor of the orbit inferior to the superior orbital fissure and it is bounded superiorly by the greater wing of sphenoid, inferiorly by maxilla and orbital process of palatine bone and laterally by the zygomatic bone. It opens into posterolateral aspect of orbital floor Where is the inferior orbital fissure? The inferior orbital fissure (IOF) lies in the floor of the orbit inferior to the superior orbital fissure and it is bounded superiorly by the greater wing of sphenoid, inferiorly by maxilla and orbital process of palatine bone and laterally by the zygomatic bone The inferior orbital fissure is the portion surrounding the eyes between the lateral section of the wall, closer to the ears, and the floor or base of the eye socket. In human anatomy, a fissure is a natural division or split found in a body part The inferior orbital fissure (IOF) lies in the floor of the orbit inferior to the superior orbital fissure and it is bounded superiorly by the greater wing of sphenoid, inferiorly by maxilla and orbital process of palatine bone and laterally by the zygomatic bone

Where is the inferior orbital fissure? - AskingLot

  1. The soft-tissue contents of the inferior orbital fissure are located between the latero dorsal wall of maxillary sinus and the greater wings of the sphenoid. The sectioned vessels within the soft-tissue strand going through the fissure can be seen as labeled. 8
  2. The inferior orbital fissure (IOF) is located inferior to the SOF between the greater wing of sphenoid (lateral orbital wall) and palatine and maxillary bones (orbital floor). The infra orbital and zygomatic nerves (CN V 2), infraorbital artery, inferior ophthalmic vein, and pterygopalatine ganglion autonomic branches pass through the IOF
  3. or openings into the orbital cavity. The nasolacrimal canal, which drains tears from the eye to the nasal cavity, is located on the medial wall of the orbit

Inferior Orbital Fissure Approximately 1 cm posterior to the inferior-lateral orbital rim lies the fissure, which connects the pterygo-palatine fossa with the floor of the orbit. The fissure is composed of the zygomatic and sphenoid bones on the lateral side and the zygoma and maxilla on the medial side Superior orbital fissure (SOF): This crack in the middle cranial fossa, that lies just posterior and lateral to the optic canal, can be better appreciated if viewed from the front, as it lies at the back of the eye orbit or socket. As mentioned earlier, a fissure is usually located between two structures, and in this case, the superior orbital fissure is located between the lesser and greater. It runs through the inferior orbital fissure, orbit, infraorbital canal then the infraorbital foramen. Here it gives off the anterior superior alveolar artery which supplies the anterior teeth and the anterior part of the maxillary sinus. It emerges from the infraorbital foramen onto the midface, where it supplies the lateral aspect of the nose, upper lip and the lower eyelid. It anastomoses.

Inferior Orbital Fissure Cranial Nerves and Autonomic Innervation in the Orbit. The maxillary division is considered the second branch of the... Head. The zygomatic nerve starts within the pterygopalatine fossa and enters the orbit via the inferior orbital fissure... Maxillary nerve. The maxillary. The foramen rotundum is located at the base of the greater wing of the sphenoid, inferior to the superior orbital fissure. It provides a connection between the middle cranial fossa and the pterygopalatine fossa. The maxillary nerve (branch of the trigeminal nerve, CN V) passes through this foramen The inferior orbital fissure is located at the margin between the lateral wall and the orbital floor. It contains the infraorbital (branch of V 2 ) and zygomatic nerves, the nerve branches from the pterygopalatine ganglion, and venous connection between the inferior ophthalmic vein and the pterygoid plexus. The inferior orbital fissure connects with the pterygopalatine fossa and the masticator. The inferior orbital fissure a.k.a. sphenomaxillary fissure is a longitudinal opening alongside the posterior two-thirds of the bony cavity, located posterolaterally towards the orbital floor dividing the lateral wall of the orbit via its floor Orbital fat herniation is primarily in a subconjunctival location. However, herniation through the inferior orbital fissure (IOF) has been scantly reported. Here, we report a cadaveric case of herniation of orbital fat through the inferior orbital fissure and into the infratemporal fossa. The cadaver's orbital anatomy and orbital fat herniation were found during routine dissection

What Is the Inferior Orbital Fissure? (with picture

Orbital apex disorders include orbital apex syndrome, superior orbital fissure syndrome and cavernous sinus syndrome. These disorders result from various etiologies, including trauma, neoplastic, developmental, infectious, inflammatory as well as vascular causes. In the past, these have been described separately based on anatomical locations of disease process; however, these three disorders. Results: In ten cases the cavernoma was located in the lateral part of the intraconal space and a lateral orbitotomy was performed. Nine cavernomas were located more inferiorly and a transconjunctival approach was used. Seven cavernomas involving the optic canal, orbital apex and superior orbital fissure were operated on via an ipsilateral intradural approach. Four cavernomas of the superior orbital fissure or of the laterobasal intraconal space were approached extradurally. In one patient. Busted series | Superior orbital fissure I DMA, Chennai - YouTube. Busted series | Superior orbital fissure I DMA, Chennai. Watch later. Share. Copy link. Info. Shopping. Tap to unmute. If. The inferior sector, which is located below the annular tendon and origin of the inferior rectus muscle, is filled with a posterior extension of the orbital fat and transmits the inferior ophthalmic vein. The relationship and course of the nerves in each sector and the incisions that may be used to open and expose the contents of the fissure are reviewed Superior orbital fissure syndrome / Rochon-Duvigneaud syndrome The superior orbital fissure is travels from the apex of the orbit laterally, anteriorly, and superiorly. This fissure divides the greater as well as lesser wings of the sphenoid and is located in the middle of the optic foramen and the foramen rotundum

What passes through the inferior orbital fissure

It is located between the buccinator and masseter, and the superficial facial muscles, and allows the masticatory and mimetic muscles to glide. It can be divided into a body and 4 processes, and is fixed by 6 ligaments to the maxilla, posterior zygoma, temporalis tendon, and the inner and outer aspects of the inferior orbital fissure. The inferior orbital fissure transmits the infraorbital and. The inferior orbital fissure (fissura orbitalis inferior) is a cleft about 20 mm wide and is located posteriorly between major wing of the sphenoid bone and the maxilla. It maintains the connection between the orbit and the infratemporal fossa and pterygopalatine fossa. It is closed by connective tissue, which contains smooth muscle cells, except at the points of passage for branches of the.

The anterolateral part of the inferior orbital fissure, which faces the temporal fossa and into which the bone cuts in the orbitozygomatic craniotomy extend, has a lower density of vascular and neural structures than the middle and posteromedial parts, which are related to the infratemporal and pterygopalatine fossa. Cranial base surgery, Craniotomy, Orbit, Orbitozygomatic approach, Osteotomy. The deep fissure located on the medial-basal surface of the frontal lobe containing the olfactory bulb and its tract. It separates the lateral surface of the gyrus rectus from the medial surface of the orbital gyri

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Periorbital Dissection of Inferior orbital wall/Orbital floo

[check mark] commonly adjacent to superior orbital fissure, inferior to optic nerve [check mark] local bone erosion. Extraconal Lesion. Extraconal-intraorbital Lesion. BENIGN TUMOR. Dermoid cyst . Teratoma <1% of all pediatric orbital tumors [check mark] ± areas of fat, cartilage, bone [check mark] expansion of bony orbit ± bone defect. Capillary hemangioma. Lymphangioma. Plexiform. The infraorbital foramen is located in the maxillary bone.It is the anterior opening of the infraorbital canal, which is the anterior continuation of the infraorbital groove, which course through the floor of the orbit.The canal may reside entirely in the maxillary sinus, suspended from the sinus roof by a mesentery.. The foramen's facial surface is superior to the canine fossa and inferior to. Originates in the superonasal quadrant of the orbit and extends posteriorly through the medial part of the superior orbital fissure into the cavernous sinus. Inferior Ophthalmic Vein: Originates at the floor and medial wall of the orbit and provides drainage for the inferio orbit. Vortex Veins: Venous drainage of the uveal tract and pierce the sclera posterior to the equator of the globe. The nerves to the extraocular muscles (cranial nerves III, IV, VI) pass through the superior orbital fissure, which is located between the lesser sphenoid wing and the orbital plate of the greater sphenoid wing. Sobo 1909 95 by Dr. Johannes Sobotta - Sobotta's Atlas and Text-book of Human Anatomy 1909

Once the oculomotor nerve passes through the superior orbital fissure into the orbit, both the superior and inferior branches are supplied by arteries arising from the ophthalmic artery. Clinical implications . The symptoms of oculomotor nerve-related injury can differ based on the location of damage within the oculomotor and Edinger-Westphal nuclei in the midbrain, and whether it occurs. The superior orbital fissure- It is located between the greater and lesser wings of the sphenoid bone, just lateral to the optic canal.This small cleft in the orbit allows the branches of the oculomotor nerve (CN-III), the trochlear nerve (CN-IV), the abducent nerve (CN-VI), nasociliary, frontal and lacrimal branches of the ophthalmic nerve (CN-V), and the superior ophthalmic vein go through In a deeper location still lies the pterygopalatine fossa, which communicates with the posterior part of the inferior orbital fissure. The pterygopalatine fossa is occupied by the pterygopalatine. Inferior orbital fissure: Located posteriorly between the maxilla and the greater wing of the sphenoid; it communicates with the pterygopalatine fossa. It transmits the maxillary nerve and its zygomatic branch, the inferior ophthalmic vein, and sympathetic nerves. Superior orbital fissure: Located posteriorly between the greater and lesser wings of the sphenoid; it communicates with the middle.

6-Inferior orbital fissure: Located posteriorly between the maxilla and the greater wing of sphenoid It communicates with the infratemporal and pterygopalatine fossae. Lateral wall It transmits 1-Maxillary nerve and its zygomatic branch 2-Infraorbital vessels 3- Inferior ophthalmic vein (or a vein communicating with pterygoid plexus of veins) Note: inferior orbital fissure is located between. four. purpose of superior orbital fissure. control movement of eye/eyelid. where is the inferior orbital fissure located. between the greater wing of the sphenoid bone and the maxilla. purpose of inferior orbital fissure. permits entry of innervation for the cheek, nose, upper lip, and teeth Location. Structures transmitted. Supra-orbital groove. Supra-orbital margin. Supra-orbital nerve and blood vessels. Infra-orbital groove and canal. Orbital plate of maxilla (floor) Infra-orbital nerve and blood vessels. Nasolacrimal canal. Medial wall. Nasolacrimal duct. Inferior orbital fissure. Between greater wing of sphenoid and maxilla. Maxillary nerve, Zygomatic branch or maxiallry nere.

Optic Canal, Superior And Inferior Orbital Fissure. We are pleased to provide you with the picture named Optic Canal, Superior And Inferior Orbital Fissure. We hope this picture Optic Canal, Superior And Inferior Orbital Fissure can help you study and research. for more anatomy content please follow us and visit our website: www.anatomynote.com 6-Inferior orbital fissure: Located posteriorly betweenthe maxilla and the greater wing of sphenoid It communicates with the infratemporal and pterygopalatine fossae. It transmits 1-Maxillary nerve and its zygomatic branch 2-Infraorbital vessels 3- Inferior ophthalmic vein (or a vein communicating with pterygoid plexus of veins) Note: inferior orbital fissure is located between the floor and. 6-Inferior orbital fissure: Located posteriorly between the maxilla and the greater wing of the sphenoid it communicates with the infratemporal and pterygopalatine fossae. It transmits 1-Maxillary nerve and its zygomatic branch 2-Infraorbital vessels 3- Inferior ophthalmic vein (or a vein communicating with pterygoid plexus of veins) Note: inferior orbital fissure is located between the floor.

Orbital Anatomy Plastic Surgery Ke

Inferior orbital fissure is located between the sphenoid greater wing and the from BI 231 at Portland Community Colleg In human anatomy, the infraorbital foramen is an opening in the maxillary bone of the skull located below the infraorbital margin of the orbit. New!!: Inferior orbital fissure and Infraorbital foramen · See more » Infraorbital groove. Not to be confused with the inferior orbital fissure, which is just lateral to the infraorbital groove. Also not to be confused with the infraorbital canal. Orbital fat herniation is primarily in a subconjunctival location. However, herniation through the inferior orbital fissure (IOF) has been scantly reported. Here, we report a cadaveric case of herniation of orbital fat through the inferior orbital fissure and into the infratemporal fossa. The cadaver's orbital anatomy and orbital fat herniation were found during routine dissection. The.

The arterial grooves are located on the inner surface of the skull produced by pressure from arteries, The lesser wing of the sphenoid also contributes to forming the superior orbital fissure, which is the gap between the greater and lesser wings of the sphenoid bone, bordered medially by the body of the sphenoid, and closed at its anterior extremity by the frontal bone. Pterygoid. Inferior division of ophthalmic vein passes through the inferior orbital fissure. It is formed by the sphenoid bone and maxilla. Likewise, what is Infraorbital region? The infraorbital region is the facial region located below the orbital region, lateral to the nose, and above the buccal region. Where does the Infraorbital artery come from? The infraorbital artery is a branch of the third part. The horizontal groove separating the superior and the inferior parietal lobules. it is located at the level of the superior temporal line. It starts from the postcentral sulcus and it continues as the superior occipital sulcus. Numerous unnamed segments arise from this fissure, but It is often possible to recognize three different parts: the anterior, intermediate, and posterior segments

The superior ophthalmic vein passes over the lateral rectus muscle and through the superior orbital fissure before entering the cavernous sinus. The inferior ophthalmic vein forms from venous channels in the floor and medial wall of the orbit before anastomosing with the superior ophthalmic vein and pterygoid plexus. FIGURE 147-2 Vascular supply of the orbit and optic nerve. Note how the. The cavernous sinuses are located within the middle cranial fossa, on either side of the sella turcica of the sphenoid bone (which contains the pituitary gland). They are enclosed by the endosteal and meningeal layers of the dura mater. The borders of the cavernous sinus are as follows: Anterior - superior orbital fissure Inferior division of ophthalmic vein passes through the inferior orbital fissure. It is formed by the sphenoid bone and maxilla. Keeping this in view, what foramen does the olfactory nerve pass through? Cranial Nerve Location and Route Superior orbital fissure—This large, irregular opening into the posterior orbit is located on the anterior wall of the middle cranial fossa, lateral to the optic canal and under the projecting margin of the lesser wing of the sphenoid bone. Nerves to the eyeball and associated muscles, and sensory nerves to the forehead pass through this opening

The Bony Orbit - Borders - Contents - Fractures

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Next, protect the underlying dura with a spatula, and drill the lesser sphenoid until dural cuff containing the meningo-orbital artery located at the superolateral border of the superior orbital fissure is visible. Isolate, coagulate, and section this artery using a scalpel. The best drill for delicate drilling is diamond drill. To relax tension on the dura, if necessary, a small incision at. Inferior orbital fissure. infra-orbital nerve of the maxillary division of the trigeminal nerve: sensory nerve to the face and maxillary teeth; zygomatic nerve of the maxillary division of the trigeminal nerve: sensory nerve to the face; small ganglionic branches to the pterygopalatine ganglion: The ciliary ganglion is located in the intraconal space of the posterior orbit between the optic.

The bony openings of the skull include the _____. carotid canal, which is located in the anterior cranial fossa superior orbital fissure, which is located at the superior margin of the anterior orbit mental foramen, which is located just below the orbit hypoglossal canal, which is located in the posterior cranial fossa . Buy Find launch. Anatomy & Physiology. 1st Edition. Kelly A. Young + 9. Through this fissure, many important structures enter the orbit from the middle cranial fossa including the third, fourth, sixth cranial nerves, and the ophthalmic branch of the fifth nerve. In addition, the superior opthalmamic vein exits the orbit to drain into the cavernous sinus via the SOF. The fissure can be divided into three anatomical regions by the annulus of Zinn (common annular. The superior orbital fissure is the site of blending of the dura, periorbita of the orbital apex, and the annular tendon which give rise to the extraocular muscles. The annular tendon surrounds only the upper-medial portion of the superior orbital fissure and situated lateral to the optic foramen (Morard et al., 1994; Park et al., 2017) causes. The superior orbital fissure is located between the small and large wings of the sphenoid bone and is the place where the cranial nerves mentioned, among other things, pass from the skull into the eye socket. Disorders are usually triggered by processes that occupy space, such as tumors ( meningiomas, craniopharyngiomas, metastases) or aneurysms and thromboses of the internal carotid. Based on these findings, we hypothesize that this case was originally a dAVF with a shunting point in the superior orbital fissure located at the frontal tip of the cavernous sinus. The SOV was separated from the cavernous sinus by thrombosis and blood flow changes in the superior orbital fissure. In the antegrade drainage subtypes of the CSdAVFs, reduction of visual acuity may occur due to.

Orbital Anatomy for the Surgeon - National Institutes of

The term superior orbital fissure syndrome (SOFS) also called as Rochon-Duvigneaud syndrome is applied to lesions located immediately anterior to the orbital apex, including the structures exiting the annulus of Zinn and often those external to the annulus. This syndrome is characterised by Multiple cranial nerve palsies may be seen i . Oculomotor nerve (III) Trochlear nerve (IV) Abducens. 3-Inferior orbital fissure: Located posteriorly between the maxilla and the greater wing of the sphenoid it communicates with the pterygopalatine fossa. It transmits 1-the maxillary nerve and its zygomatic branch 2-the inferior ophthalmic vein and sympathetic nerves. 4-Nasolacrimal canal: Located anteriorly on the medial wall; it communicates with the inferior meatus of the nose It transmits. nal, superior and inferior orbital fissures, and foramen rotundum. However, knowing this anatomy is crucial to evaluate complex frac-tures,tumors,andinflammatoryprocessesin-volvingtheorbitalapex. Evaluating osseous anatomy of the orbital apexwithcomputedtomography(CT)requires knowledgeofitsthree-dimensionalappearanc

Skull: Foramina, fissures and contents Kenhu

• Inferior orbital fissure transmits the maxillary nerve (a branch of CNV), the inferior ophthalmicvein, andsympatheticnerves. There are other minor openings into the orbital cavity. • Nasolacrimal canal which drains tears from the eye to the nasal cavity, is located on the medialwall of the orbit. • Other small openings include the supraorbital foramen and infraorbital canal which carry. Inferior orbital fissure: Lateral border of orbital floor; Formed by greater wing of sphenoid superiorly and palatine and maxillary bones inferiorly ; Inferior ophthalmic vein; Infraorbital artery and vein; Branches of the maxillary division of the trigeminal nerve (CN V2)—zygomatic and infraorbital nerves; Orbital branches of the pterygopalatine ganglion; Infraorbital foramen: Middle of the. The inferior ophthalmic veins pass through the inferior orbital fissure to communicate with the pterygoid plexus and anastomose with the superior ophthalmic veins posteriorly to drain to the cavernous sinus. Anteriorly, the superior and inferior ophthalmic veins can communicate with the angular vein on the face, creating the so-called danger triangle. The supposed lack of valves within the. The superior orbital fissure between the greater and lesser wings of the sphenoid separates the lateral wall and roof posteriorly. It transmits the third, fourth, and sixth cranial nerves to the extraocular muscles moving the eyeballs, the ophthalmic division of the trigeminal nerve, and ophthalmic veins. The lateral wall and floor are separated by the inferior orbital fissure between the.

Temporal, Infratemporal, Pterygopalatine Fossa - Anatomy

Infraorbital artery Radiology Reference Article

Position the lateral edge of the plate along the inferior orbital fissure. Since the implant is anatomic and preformed, it should be positioned in the same location for every patient. The orientation of the implant does not need to change based on the anatomy of the fracture. Place the plate on the stable bony contour. Note: Confirm appropriate dissection. Insert the medial wall section of the. Palpebral Fissure. The palpebral fissure refers to the normal exposed area between upper and lower eyelids. The palpebral fissure vertical height (PFH) is measured between the margin of the lower eyelid to the margin of the upper eyelid.The normal palpebral fissure height is 8-11 mm.This is a key measurement that you need when assessing for ptosis Located below the superior orbital fissure between the lateral wall and the floor of the orbit with access to the pterygopalatine and inferotemporal fossa; Transmits the infraorbital and zygomatic branches of the CN V, (maxillary division), orbital nerve from the pterygopalatine fossa, and the inferior ophthalmic vein ; Orbital contents. Periorbita; The periosteal covering of the orbital bones. The inferior orbital fissure is the intraoperative landmark that is used for the depth of the orbital osteotomy and, as the osteotomy is continued superiorly, becomes intraosseous within the sphenoid wing. The middle cranial fossa can be inadvertently breached through the sphenoid wing because it is shallow in many of the syndromic cases. The Whitnall tubercle is located on the lateral orbital. B. superior orbital fissure, which is located at the superior margin of the anterior orbit. C. mental foramen, which is located just below the orbit. D. hypoglossal canal, which is located in the posterior cranial fossa. Answer: D. Critical Thinking Questions. Q. Define and list the bones that form the brain case or support the facial structures. A. The brain case is that portion of the skull.

Inferior Orbital Fissure - an overview ScienceDirect Topic

The inferior orbital fissure lies on the floor of the orbit. The superior border is the greater wing of the sphenoid, and the maxilla and palatine bone compose the inferior border, with the zygomatic bone laterally. The zygomatic nerve and the infraorbital nerve pass through this fissure as well as some infraorbital vessels Location Connection to other cranial cavities Most important structures; Temporal fossa: Cranial to the zygomatic arch of the temporal bone; Orbit via inferior orbital fissures; Auriculotemporal nerve; Superficial temporal artery; Temporal muscle; Zygomaticotemporal nerve; Deep temporal arteries; Infratemporal fossa . Medial to the zygomatic arch; Inferior to the greater wing of sphenoid bone. Inferior Orbital Fissure Located between the greater wing of the sphenoid bone and maxilla. Contains the maxillary nerve (V 2), branches from the pterygopalatine ganglion to the lacrimal gland, superior alveolar nerves (anterior and middle), infra-orbital artery and vein and inferior ophthalmic vein. Infra-Orbital Canal Located on the anterior orbital surface of the maxilla. Contains the infra.

Cranial Foramina - Foramen Ovale - Skull - TeachMeAnatom

superior orbital fissure, inferior orbital fissure, optic canal, anterior and posterior ethmoidal foramina, nasolacrimal canal, and the infraorbital canal. Nasal cavity. The nasal cavity or cavity of the nose is an irregular, bilateral air-filled space located within the skull above the roof of the mouth, forming the internal part of the nose The superior orbital fissure lies just lateral and inferior to the optic canal, and is formed at the junction of the lesser and greater wing of the sphenoid bone. It is a major pathway for intracranial communication, containing cranial nerves III, IV, VI which control eye movement via the extraocular muscles, and the ophthalmic branches of cranial nerve V, or V1. The third division of the. • Inferior orbital fissure transmits the maxillary nerve (a branch of CN V), the inferior ophthalmic vein, and sympathetic nerves. There are other minor openings into the orbital cavity. • Nasolacrimal canal which drains tears from the eye to the nasal cavity, is located on the medial wall of the orbit. • Other small openings include the. The optic foramen is located approximately 40-45mm posterior to the inferior orbital rim and is superior to the horizontal plane of the orbital floor. Orbital floor fractures may occur in isolation or as part of a pattern, such as zygomaticomaxillary complex and naso-orbital-ethmoid fractures. The incidence of globe injury with orbital fractures ranges from 14-30 percent and may present as a. Superior Orbital Fissure • Located posteriorly between the greater and lesser wings of the sphenoid • It communicates with the middle cranial fossa • It transmits the lacrimal nerve, the frontal nerve, the trochlear nerve, the oculomotor nerve (upper and lower divisions), the abducent nerve, the nasociliary nerve, and the superior ophthalmic vein. Optic Canal • Located posteriorly in.

Orbit Radiology Ke

Medially near the orbital margin is located the groove for nasolacrimal duct. Near the middle of the floor, located infraorbital groove, which leads to the infraorbital foramen. The floor is separated from the lateral wall by inferior orbital fissure, which connects the orbit to pterygopalatine and infratemporal fossa. The medial wall is formed by the frontal process of maxilla, lacrimal bone. Differentiating between lesions at the cavernous sinus versus the superior orbital fissure can be challenging and sometimes the literatures describe it as sphenocavernous syndrome. It presents as paresis of oculomotor, trochlear and abducens nerves with associated maxillary division of trigeminal nerve, producing pain. This can be caused by primary (direct invasion) or secondary (intracranial.

Inferior Orbital Fissure - Earth's La

The superior orbital fissure, the inferior orbital fissure, and the optic canal are located toward the apex. Each orbital volume is about 30 mL. The orbital floor is the shortest of all the walls and does not reach the apex. It measures 35 X 40 mm and terminates just before the orbital apex and annulus of Zinn. A 3-mm downward displacement of the entire floor results in an orbital volume that. The pterional approach provides an excellent view of the superior and lateral aspects of the posterior orbit, the optic canal, the superior orbital fissure, and the anterior temporal fossa and a panoramic view of the orbital apex that cannot be obtained using other orbital or orbitocranial approaches (Figures 2, 4). It is ultimately centered on the Sylvian fissure and provides access to the. 9. Superior Orbital Fissure: It is also a grove in orbit of the eye and is located between the greater and lesser wings of spheniod bone. Though it passes: Abducence nerve which is sixth cranial nerve. Ophthalmic vein (both superior and inferior divisions). Occulomoter nerver; Trochlear nerve. Ophthalmic branch of trigeminal nerve. Sympathetic. On the other hand, the maxillary nerve groove is located in the superior and medial edge of maxillary tuberosity at the inferior margin of the inferior orbital fissure with an average distance from sphenoidal tubercle of 7.6 mm, with a maximum value of 11.51 mm and a minimum value of 4.0 mm

Ch 7 Axial Skeleton - Biology 250 with Norris at AzusaPorion - WikipediaDural Venous SinusesSkull at Galen College of Nursing - StudyBlue

or orbital fissure) are best approached via a pterional ap-proach, usually without an orbital osteotomy. SURGICAL TECHNIQUES Inferior Orbital Approach or Posteroinferior Orbitotomy Technically it is most difficult to access orbital lesions located in the apex (Fig. 1), particularly those medial and inferior to the optic nerve. This location. The inferior orbital fissure represents the incomplete border between the orbit's lateral wall, formed by the greater wing of the sphenoid bone, and the orbital floor, formed mostly by the orbital plate of the maxillary bone and, to a far lesser extent, the orbital process of the palatine bone. The inferior orbital fissure communicates with the pterygopalatine fossa posteromedially, and the. The infraorbital sulcus is a fissure located on the orbital plate of the maxillary bone that runs the orbital floor displaying a posteroanterior direction. After a 2cm trajectory it transforms into the infraorbital canal and exits the orbit through the infraorbital foramen, located 5mm below the inferior orbital rim. 7 The maxillary sinus and often some of the ethmoid sinuses are immediately.

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