Article sphenoid bone. Medical search. Frequent questions

The lateral surfaces of the body are united with the greater wings of the sphenoid and the medial pterygoid plates. (wikipedia.org)

They are partially closed, in front and below, by two thin, curved plates of bone, the sphenoidal conchae, leaving in the articulated skull a round opening at the upper part of each sinus by which it communicates with the upper and back part of the nasal cavity and occasionally with the posterior ethmoidal air cells. (wikipedia.org)
Medially, they may expand into the wall of the cavernous sinus, anteriorly into the orbit, and laterally into the temporal bone. (medscape.com)
Anatomic configurations that predispose the optic nerve to injury include type 2 (nerve course adjacent to the sphenoid sinus causing an indentation of the sinus wall, without contacting any posterior ethmoid cell) or type 3 (nerves course through the sphenoid sinus), bone dehiscence over the optic nerve, and anterior clinoid process pneumatization (ACPP) with and without ipsilateral optic nerve protrusion. (openaccesspub.org)
Pneumatization occurs when a paranasal sinus, often the sphenoid or ethmoid sinus, extends into the anterior clinoid process via the inferior or anterior root otherwise known as the optic strut. (openaccesspub.org)
This case report highlights two cases of spontaneous CSF leaks associated with hyper-pneumatized petrous bone and sphenoid sinus. (springeropen.com)
A constellation of extensive pneumatization, arachnoid pits and empty sella plays a role in the pathogenesis of sphenoid sinus fistulae [ 3 ] apart from congenital skull base defects. (springeropen.com)
In this study, we wish to highlight the existence of spontaneous CSF leak as an entity associated with hyper-pneumatized petrous bone and sphenoid sinus. (springeropen.com)
A considerable degree of variability exists in the anatomy of the sphenoid sinus, sella turcica, and surrounding skull base structures. (web.app)
A) Frontal view shows the greater sphenoid wings (G) and pterygoid plates (P) resembling the wings of a bird with extended limbs, respectively.The sphenoid sinus (S), posterior wall of the orbit (O), and planum sphenoidale (N) are also highlighted. (web.app)
The sphenoid sinus is one of the four paired paranasal sinuses that is contained within the body of the sphenoid bone.The sphenoid sinuses vary in size and shape, and owing to the lateral displacement of the intervening septum, which may insert on the carotid canal, they are rarely symmetrical. (web.app)
on them we can find impressions of venous vessels - sulcus sinus sagittalis superioris (cranially from the protuberance), sulcus sinus transversi (bilaterally from the protuberance), sulcus sinus sigmoidei (continuation of the transverse impression towards the temporal bone). (wikilectures.eu)
CT scan in bone window (A, D) reveals a soft tissue mass in the left frontal sinus without any signs of bone destruction or reaction. (biomedcentral.com)
TY - JOUR T1 - Pituitary abscess following expanding sphenoid sinus pyocele: complication of endoscopic endonasal transsphenoidal surgery. (unboundmedicine.com)
Chronic IFRS is an indolent infection with a slow destructive process that most commonly affects the ethmoid and sphenoid sinuses, but may involve any paranasal sinus 6 , 7 . (actaitalica.it)
When edentulous, pneumatization of the maxillary sinus reduces the amount of available bone for implant placement (Figure 1). (implantpracticeus.com)
1,2 When dentate, immediate implant placement following maxillary molar extraction is complicated by large diameter residual sockets, variable quantities of interradicular bone, and sinus floor proximity. (implantpracticeus.com)
4-6 To overcome these shortcomings of the posterior maxilla for implant placement, a number of ancillary techniques have been employed including lateral window sinus lifts, 7,8 crestal sinus lifts, 9,10 bone condensation, 11 short length-wide diameter dental implants, 12 and offset placement of implants into the palatal root socket. (implantpracticeus.com)
Magnetic resonance imaging (MRI) showed a multicystic lesion arising from the sphenoid sinus and extending into ethmoid sinus, superior nasal cavity and medial walls of the orbit. (turkishneurosurgery.org.tr)

The posterior surface, quadrilateral in form [Fig. 3], is joined, during infancy and adolescence, to the basilar part of the occipital bone by a plate of cartilage. (wikipedia.org)
Occasionally, they extend into the basilar part of the occipital bone nearly as far as the foramen magnum. (wikipedia.org)
The occipital bone is at the back of the head. (issaptwellness.com)
The sphenoid bone is situated at the base of the skull in front of the temporals and basilar part of the occipital. (web.app)
MRI showed cystic hyperintense area in right fronto-temporo-parieto occipital calvarium causing diffuse thickening and involvement of right sphenoid wings and facial bones viz. (mjdrdypu.org)
The frontal bone (1), Parietal bones (2), temporal bones (2), the occipital bone (1), sphenoid (1) and ethmoid (1). (brainkart.com)
The occipital bone is at the back and lower part of the Cranial cavity. (brainkart.com)
Lambdoidal suture between the parietal and the occipital bone. (brainkart.com)
The occipital bone is the bone forming the back ( dorsal ) wall of the braincase. (wikilectures.eu)
The lateral parts of this bone are placed in pairs on the outside of the occipital foramen. (wikilectures.eu)
The scale of the occipital bone contains sections differentiated according to origin, i.e. a desmogenously ossified part and a chondrogenically ossified part. (wikilectures.eu)
In the chondrogenic part, the paramastoideus process appears on the pars lateralis, a supernumerary vertebra around the foramen magnum or the atlas merging with the occipital bone. (wikilectures.eu)
Ventrally, the occipital bone is connected by cartilage to the sphenoid bone in synchondrosis sphenooccipitalis , the connection changes to synostosis in the 18th-20th. (wikilectures.eu)
Sutura lambdoidea , or a saw-shaped seam in the shape of the letter λ , fastens the occipital bone with the parietal bone on the scale. (wikilectures.eu)
The basilar process of the occipital bone. (flyinggiraffeteas.com)

Along the posterior part of the lateral margin of this groove, in the angle between the body and greater wing, is a ridge of bone, called the sphenoidal lingula. (wikipedia.org)
Sphenoid wing meningiomas are categorized as lateral, middle, or medial (clinoidal), depending on the origin of the tumor along the sphenoid ridge. (medscape.com)
The involved bone (including the lateral sphenoid wing) and a generous cuff of dura were resected. (surgicalneurologyint.com)
In contrast the posterior tip of the sphenoid bone, which was visualized on lateral radiographs, provided a landmark at a remarkably constant AP distance from these nuclei. (ox.ac.uk)
Lateral orbitotomy approach for removing hyperostosing en plaque sphenoid wing meningiomas. (surgicalneurologyint.com)
This article will show you common things you should look at when reading a lateral c-spine radiograph, but are also useful when reading a CT scan or MRI of the c-spine. (ebmconsult.com)
It is the border between the lateral and orbital surfaces of the zygomatic bone. (flyinggiraffeteas.com)

The anterior boundary of the sella turcica is completed by two small eminences, one on either side, called the middle clinoid processes, while the posterior boundary is formed by a square-shaped plate of bone, the dorsum sellae, ending at its superior angles in two tubercles, the posterior clinoid processes, the size and form of which vary considerably in different individuals. (wikipedia.org)
2 Given reports of a posterior maxillary sutural width increase of 1.12 mm due to RME, 4 it was hypothesized that the sphenoid bone may also be affected by this orthodontic movement. (e-kjo.org)
The accuracy of these operations strongly suggested that the posterior tip of the sphenoid bone could be used to predict not only the AP but also the height of the amygdala. (ox.ac.uk)
1 , 2 , 3 , 4 The anterior clinoid process (ACP) is a posterior and medial continuation of the lesser sphenoid wing, connecting to the sphenoid bone body via superior and inferior roots. (openaccesspub.org)
3 Additionally, bone in the posterior maxilla is of poor density and provides minimal cortical anchorage for dental implant stability. (implantpracticeus.com)

Dense homogenous pattern of FD along with areas of hypodense attenuation in right temporal bone (squamous and petrous), right sphenoid, clivus, right zygomatico-temporal and right maxillary bone was seen. (mjdrdypu.org)
Contrast-enhanced T1-weighted MRI showed a multilobulated, partly solid and cystic mass with central calcifications of the sphenoid cavity and clivus reaching both internal carotid arteries, and invading the ethmoid sinuses and the nasal cavity. (biomedcentral.com)

This video covers the anatomy, location and relations of the vomer, a vertical bone of the viscerocranium that runs within the nasal cavity. (flyinggiraffeteas.com)

The two temporal bones form the lower part of the sides of the skull. (brainkart.com)
Squamosal suture between the parietal and the temporal bones. (brainkart.com)
Pterion is point formed the summit of frontal, parietal, the greater wing of sphenoid and temporal bones which forms a 'H'- shaped sutures. (journalcra.com)
it articulates with the parietal and temporal bones anteriorly, and the atlas inferiorly. (flyinggiraffeteas.com)

While the purpose of RME is to separate both halves of the maxilla, each bone is connected posteriorly to other bones, which creates resistance to expansion. (e-kjo.org)
The fibers of this muscle connect the sphenoid, maxilla, and palatine bones to the inner surface of the angle and ramus of the mandible. (abmp.com)
Infra-orbital sub-ciliary incision [Figure 8] a-c was made and maxilla, zygomatic and sphenoid bones were shaved. (mjdrdypu.org)
Figure 8: Infra-orbital sub-ciliary incision and shaving of maxilla, zygomatic and sphenoid bones. (mjdrdypu.org)

Two different growing patterns of sphenoid wing meningioma have been described: meningioma en masse, forming a nodular space-occupying lesion, and meningioma en plaque, which is flat and demonstrates a carpet-like growth pattern. (medscape.com)
Coronal T1-weighted MRI with gadolinium enhancement of a sphenoid wing meningioma with some degree of encasement of bilateral cavernous sinuses. (medscape.com)
Sphenoid wing (SW) en plaque meningioma (ePM) is a subgroup of meningiomas defined by its specific character presenting with a rather thin sheath of soft tumor tissue accompanied by disproportionate and extensive bone hyperostosis. (surgicalneurologyint.com)
There was no evidence of a connection of this sinonasal meningioma to other intracranial masses, as indicated in CT scan in bone window and MR imaging (Fig. 2 ). (biomedcentral.com)

Sphenoid wing meningiomas also are known as "orbitosphenoid meningiomas," "meningiomas en plaque of the sphenoid wing," and "sphenoid wing meningiomas with osseous involvement. (medscape.com)
Osseous reconturing was done by shaving of involved facial bones. (mjdrdypu.org)
What Is Bone Or Osseous Tissue? (biologyonline.com)
Definition noun (1) The osseous tissue that fills the interior or cavity of bones with a latticework of small spicules or. (biologyonline.com)

[ 8 ] Of lesions in the supratentorial compartment, sphenoid wing meningiomas represent about 15-20% of all meningiomas. (medscape.com)
[ 9 ] Sphenoid wing meningiomas may be associated with hyperostosis of the sphenoid ridge and may be very invasive, spreading to the dura of the frontal, temporal, and orbital regions. (medscape.com)
[ 13 ] Sphenoid wing meningiomas are the most common of the basal meningiomas. (medscape.com)
Sphenoid wing meningiomas extending to the orbit (ePMSW) are currently removed through several transcranial approaches. (surgicalneurologyint.com)
5 20 45 ] Cushing and Eisenhardt[ 13 ] coined the term of "en plaque" for the first time to differentiate this type of tumor growth from those designated as "en mass" meningiomas. (surgicalneurologyint.com)

the lower margin articulates with the orbital process of the palatine bone, and the upper with the orbital plate of the frontal bone. (wikipedia.org)
The lesion eroded the inner table of the left frontal bone with the outer table almost completely eroded [ Figure 1 ]. (surgicalneurologyint.com)
lacrimal fossa a hollow in the orbital plate of the frontal bone, formed by the. (biologyonline.com)
For instance the frontal bone is the skull bone that lies under the forehead. (issaptwellness.com)
The glabella is the smooth midline bony prominence between the supraciliary arches of the frontal bone, representing the most anterior part of the forehead when standing erect and looking straight ahead. (radiopaedia.org)
The frontal bone forms the forehead and the upper part of the orbital cavities. (brainkart.com)
Coronal Suture between the frontal bone and the two parietal bones. (brainkart.com)

A 26-year-old female patient with history of right rhinorrhea with imaging evidence of bilateral hyper-pneumatized petrous bones and a bony defect in the right petrous bone on computed tomography (CT). (springeropen.com)
On computed tomography, brain tissue protruded through a part of the ethmoid bone of his right anterior skull base, and it was diagnosed as transethmoidal-type basal encephalocele. (medscape.com)

3. Follow the oblique fibers of the medial pterygoid medially toward the sphenoid. (abmp.com)

The body of the sphenoid bone, more or less cubical in shape, is hollowed out in its interior to form two large cavities, the sphenoidal sinuses, which are separated from each other by a septum. (wikipedia.org)
The ethmoid is a light spongy bone, cubical in shape, situated at the roof of the nose wedged in between the orbits. (brainkart.com)

The sphenoid bone, through the pterygoid plates, is one of these direct attachments. (e-kjo.org)

This tumor usually arises from the lesser wing of the sphenoid bone. (medscape.com)
We report two patients with abnormal development of the lesser wing of the sphenoid bone, globe, optic nerve and cerebral hemisphere without stigmata of neurofibromatosis type 1. (johnshopkins.edu)
The lesser wing of the sphenoid bone was abnormally formed and was not ossified ipsilateral to the dysmorphic eye and underdeveloped cerebral hemisphere. (johnshopkins.edu)
lesser wing of sphenoid bone One of a bilateral pair of triangular, pointed plates. (biologyonline.com)
Hyperostosis of the greater and lesser wings of the sphenoid bone leading in progressive proptosis is the main characteristics of ePM in this location. (surgicalneurologyint.com)
The sphenoid bone is made up of several parts: a central body that contains the sella turcica, and two greater wings and two lesser wings laterally. (web.app)
Postoperative MRI of the head demonstrated residual tumor involving the lesser wing of the sphenoid bone bilaterally, the basisphenoid, left pterygopalatine fossa, nasopharynx and inferior turbinate. (appliedradiationoncology.com)

Sinusitis the base of the skull (frontal, ethmoid and sphenoid) are more involved in intracranial complications. (ajol.info)
The sphenoid is situated at the anterior part of the base of the skull. (brainkart.com)
The temporal bone or os temporale is a paired, irregular bone and the thickest in the human body, located at the sides and base of the skull. (flyinggiraffeteas.com)

After cutting away the cancerous lesion, 'I measure out a circle of equal size in the skin above the collar-bone (where the skin is similar) and remove it. (mentalfloss.com)

These patients may exhibit a type of restricted primary sphenoid dysplasia, while the sphenoid dysplasia of neurofibromatosis type 1 may be secondary to orbital or ocular neurofibromas and other factors associated with that disease. (johnshopkins.edu)
Fibrous dysplasia (FD) is a slow growing benign noninherited disorder in which normal bones are replaced by fibrous tissue and immature woven bones. (mjdrdypu.org)
Fibrous dysplasia (FD) is an abnormal bone growth where normal bone is replaced with fibrous tissue. (mjdrdypu.org)

A 49-year-old female patient with history of right rhinorrhea with features of hyper-pneumatization of sphenoid bone involving right greater wing of sphenoid bone and bilateral pterygoid process with a bony defect in the right greater wing of sphenoid was demonstrated on CT. (springeropen.com)

It can occur in any part of the skeleton but bones of skull, thigh, shin, ribs upper arm, and pelvis are commonly affected. (mjdrdypu.org)
The axial division of the skeleton consists of the bones that lie around the axis. (brainkart.com)
The parts of the axial skeleton are the skull, hyoid bone, auditory ossicles, vertebral column, sternum and ribs. (brainkart.com)
Appendicular skeleton consists of the bones of the girdle and the upper and lower limb. (brainkart.com)
It is the bony framework of the head arranged in two parts - the cranium which consists of eight bones and the facial skeleton of fourteen bones. (brainkart.com)
The bone is an organ that forms the skeleton of vertebrates. (biologyonline.com)
A bone is a rigid organ that constitutes part of the vertebrate skeleton in animals. (flyinggiraffeteas.com)
Although ancestors of the cyclostomes and elasmobranchs had armoured headcases, which served largely a protective function and appear to have been true bone, modern cyclostomes have only an endoskeleton, or inner skeleton, of noncalcified cartilage and elasmobranchs a skeleton of calcified cartilage. (flyinggiraffeteas.com)

Oct 20, 2016 - Explore fofo's board "sphenoid bone" on Pinterest. (web.app)

It's technically where four skull bones-the frontal, parietal, temporal, and sphenoid-meet in the skull. (mentalfloss.com)
While these skull bones are 'relatively strong,' though thin, Anwar tells Mental Floss, the point at which they meet is the weakest point because there's no solid bone beneath them. (mentalfloss.com)
Of the three fetuses presenting the greatest molding of the skull bones and brain shape deformation, two were delivered by cesarean-section (one after a forceps failure and one for engagement default), while the fetus presenting with the greatest skull molding and brain shape deformation was born physiologically. (plos.org)
Although the bones of the skull themselves are not responsible for the pain associated with a headache, it is worthy to know the names and location of the main skull bones when discussing headaches. (issaptwellness.com)
The temples overlie the temporal and sphenoid skull bones. (issaptwellness.com)
Lastly, the two parietal bones are the large skull bones at the top of your head above your ears. (issaptwellness.com)
A suture is an immovable joint found only between skull bones. (brainkart.com)

endochondral bone A bone that develops in a cartilage environment after the latter is partially or. (biologyonline.com)
Such bone is formed without a cartilage model and includes the bones of the face and cranium. (flyinggiraffeteas.com)

There are 14 facial bones, which are the nasal bones (2), Maxillae (2), Zygomatic bones (2), Mandible (1), Lacrimal bones (2), Palatine bones (2), Inferior nasal conchae (2) and Vomer (1). (brainkart.com)

Intraoperatively, the tumor was found to have breached the dura and as suggested by preoperative imaging, had invaded bone [ Figure 3 ]. (surgicalneurologyint.com)

Valgus' refers to anatomical bone deformity wherein a part of. (biologyonline.com)
Q. Anatomical terms of bone [edit on Wikidata] In anatomy, the atlas (C1) is the most superior (first) cervical vertebra of the spine and is located in the neck. (flyinggiraffeteas.com)

These sinuses are two large, irregular cavities hollowed out of the interior of the body of the bone, and separated from one another by a bony septum, which is commonly bent to one or the other side. (wikipedia.org)
Further, presence of hyper-pneumatized paranasal sinuses or the skull base weakens the bone and predisposes to development of spontaneous defects and further fistulas. (springeropen.com)
Hyper-pneumatized petrous bone and paranasal sinuses can be attributed as a risk factor for formation of spontaneous CSF leaks. (springeropen.com)

The sphenoid bone, also known as Os sphenoidale, is a cranial bone, shaped like a butterfly or a wasp, which occupies most of the middle part of the skull's base, making up the middle region of the cranial fossa. (web.app)
The parietal bone or os parietale is a paired, flat cranial bone that covers the mid portion of the skull. (flyinggiraffeteas.com)

[ 1 ] Brain tissue protrudes through bony defects in the cribriform plate and body of the sphenoid or ethmoid. (medscape.com)

On either side of the dorsum sellae is a notch for the passage of the abducent nerve, and below the notch a sharp process, the petrosal process, which articulates with the apex of the petrous portion of the temporal bone, and forms the medial boundary of the foramen lacerum. (wikipedia.org)
Plain CT study showed hyper-pneumatization of the petrous bones with associated soft tissue thickening within (Fig. 1 ). (springeropen.com)
In addition, a bony defect of ~ 2 mm with adjacent bone scalloping involving the anterolateral aspect of petrous part of right temporal bone (Fig. 1 ) was demonstrated. (springeropen.com)
Corresponding MRI brain revealed features of right mastoiditis extending to involve the pneumatized petrous bone (Fig. 3 ). (springeropen.com)

Each entry includes the title of the article, author(s), Journal title, year (date of publication), volume number, issue number, number of pages, number of references, subject descriptors, geographic descriptors and abstract has been added and is searchable on the database on the Internet. (who.int)

The two parietal bones together form the roof and sides of the skull. (brainkart.com)
Sagittal Suture between the two parietal bones. (brainkart.com)

FD can be monostotic with lesions localized in only one bone, (70-80% of all cases), or it can be polyostotic in which it involves many bones. (mjdrdypu.org)

Article received: August 25, 2023. (bvsalud.org)
Article accepted: October 23, 2023. (bvsalud.org)

Among these is the sphenoid bone, which is attached to the maxillary bone through the pterygomaxillary suture at the pterygoid plate level. (e-kjo.org)
Very little connective tissue is found between the bones of the suture. (brainkart.com)

Definition noun, plural: bone tissues A mineralized connective tissue from which bones are made. (biologyonline.com)

Computer-assisted surgical simulation and the production of surgical guides by computer-assisted design (CAD)/ computer-assisted manufacturing (CAM)-engineered 3D printing clearly facilitate accurate osteotomy and/or reduction of zygomatic bone. (biomedcentral.com)

Of these, about one half occur in the sphenoid wing, and one half occur in the tuberculum sella or the olfactory groove. (medscape.com)

Spongy bone, also known as cancellous bone or trabecular bone, is a type of bone tissue found at the ends of long bones and. (biologyonline.com)
Bone marrow (Science: haematology) The soft, spongy tissue found in the centre of most large bones that produces the. (biologyonline.com)
A spongy bone in which the matrix forms connecting bars and plates, partially enclosing many intercommunicating spaces filled with bone marrow. (flyinggiraffeteas.com)

3 Complete skeletal expansion is not accomplished because of resistance of the adjacent hard and soft structures surrounding the maxillary bones. (e-kjo.org)

The image depicts a contrasted MRI of the brain which shows an enhancing mass along the sphenoid ridge, orbital apex, and even the temporalis muscle. (medscape.com)

Dr. Lütfi Kırdar Kartal Reseach and Training Hospital, Neurosurgery, Istanbul, Turkey An aneurysmal bone cyst (ABC) typically involves the long bones of the extremities, thorax, pelvis, or vertebrae. (turkishneurosurgery.org.tr)

The Sphenoid bone sits behind the eyes and is shaped like a butterfly. (lindaledwidge.com)

Crammed between a group of bones in the frontal part of the cranium, it becomes one of the 8 bones that form the cranium. (web.app)
The bones which form the Cranium are flat bones which are immovably fixed to each other by sutures. (brainkart.com)

It is connected to every other bone in the skull and , through the lining of the brain, to every vertebrae in the spine. (lindaledwidge.com)
The Vertebral Column or the spinal column is a flexible structure formed by a number of bones called Vertebrae . (brainkart.com)
24 of which are separate bones and the remaining vertebrae are fused to form two bones, the sacrum and the coccyx. (brainkart.com)
Those in the two lower regions the Sacrum and Coccyx are united in the adult to form two bones called the fixed vertebrae. (brainkart.com)

We report a unique case of meningitis by S treptococcus oralis in a 58-year-old patient with cerebral spinal fluid leak due to right sphenoid meningoencephalocele. (biomedcentral.com)

Of note however, the effects of expansion treatment on the sphenoid bone are not very well understood, as traditional radiographs are two-dimensional (2D) and thus do not enable true visualization of the sphenoid bone itself. (e-kjo.org)
Because they are 2D, radiographs depict the superimposition of structures, preventing a clear view of the sphenoid bone. (e-kjo.org)

Anatomy4

Diseases5

Analytical, Diagnostic and Therapeutic Techniques and Equipment3

Phenomena and Processes2

Greater wings of1

Sinus18

Occipital15

Lateral7

Posterior5

Clivus2

Nasal cavity1

Temporal bones4

Maxilla4

Meningioma4

Osseous4

Meningiomas5

Frontal bone7

Computed tomography2

Medial pterygoid1

Cubical in shape2

Pterygoid plates1

Lesser7

Base of th3

Lesion1

Dysplasia3

Bilateral1

Skeleton8

20161

Skull bones7

Cartilage2

Palatine1

Tumor1

Anatomical2

Sinuses3

Cranial bone2

Cribriform plate1

Petrous4

Abstract1

Parietal bones2

Lesions1

20232

Suture2

Connective tissue1

Zygomatic bone1

Sella1

Spongy3

Maxillary bones1

Ridge1

Long bones1

Shaped like a butterfly1

Cranium2

Vertebrae4

Leak1

Radiographs2