Search results
Results from the WOW.Com Content Network
In the general population, 17% of mandibles have an additional mental foramen or foramina on at least one side, [3] while 4% of the mandibles show multiple mental foramina on both sides. Most are unequal in size, often with a single large foramen while any others are smaller. [3] An incisive mental foramen is observed in 1% of the side of the ...
A skull fracture is a break in one or more of the eight bones that form the cranial portion of the skull, usually occurring as a result of blunt force trauma.If the force of the impact is excessive, the bone may fracture at or near the site of the impact and cause damage to the underlying structures within the skull such as the membranes, blood vessels, and brain.
Foramen ovale. The foramen ovale is an opening in the greater wing of the sphenoid bone. [1] The foramen ovale is one of two cranial foramina in the greater wing, the other being the foramen spinosum. [2]: 771 The foramen ovale is posterolateral to the foramen rotundum and anteromedial to the foramen spinosum.
A basilar skull fracture typically requires a significant degree of trauma to occur. [1] It is defined as a fracture of one or more of the temporal, occipital, sphenoid, frontal or ethmoid bone. [1] Basilar skull fractures are divided into anterior fossa, middle fossa and posterior fossa fractures. [1] Facial fractures often also occur. [1]
MRI is also superior for pituitary imaging. [20] It may however be less effective at identifying early cerebritis. [21] In the case of a concussion, an MRI should be avoided unless there are progressive neurological symptoms, focal neurological findings or concern of skull fracture on exam. [22]
In transcalvarial herniation, the brain squeezes through a fracture or a surgical site in the skull. [7] Also called "external herniation", this type of herniation may occur during craniectomy , surgery in which a flap of skull is removed, the protruding brain region preventing the piece of skull from being replaced during the operation.
A computed tomography (CT) of the face and skull is the imaging of choice for diagnosing Le Fort fractures. [5] [7] CT imaging has greatly replaced the use of plain x-ray as CTs are significantly more likely to show when a fracture is present compared to an x-ray. [7] Additionally, CT imaging is far more useful in visualizing the skeletal ...
The anterior cranial fossa is a depression in the floor of the cranial base which houses the projecting frontal lobes of the brain. It is formed by the orbital plates of the frontal, the cribriform plate of the ethmoid, and the small wings and front part of the body of the sphenoid; it is limited behind by the posterior borders of the small wings of the sphenoid and by the anterior margin of ...