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Petrosquamous suture information


Petrosquamous suture
Temporal bone at birth. Inner aspect.
Base of the skull. Upper surface. (Temporal bone is in pink.)
Details
Identifiers
Latinsutura petrosquamosa
TA98A02.1.06.075
TA2718
FMA55466
Anatomical terms of bone
[edit on Wikidata]

The petrosquamous suture is a cranial suture between the petrous portion and the squama of the temporal bone. It forms the Koerner's septum. The petrous portion forms the medial component of the osseous margin, while the squama forms the lateral component. The anterolateral portion (squama) arises from the mesenchyme at 8 weeks of embryogenesis while the petromastoid portion develops later from a cartilaginous center at 6 months of fetal development.[1]

In certain people, it can contain an emissary vein, referred to as the petrosquamosal sinus. Being aware of this anatomic variant with preoperative CT scanning can be important to prevent bleeding in certain types of otolaryngological surgeries. Some authors have theorized that a persistent venous sinus reflects an arrest in embryologic development.[1]

  1. ^ a b "The Petrosquamosal Sinus: CT and MR Findings of a Rare Emissary Vein". American Journal of Neuroradiology. 2001. pp. 1186–1193.

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Petrosquamous suture

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The petrosquamous suture is a cranial suture between the petrous portion and the squama of the temporal bone. It forms the Koerner's septum. The petrous...

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Squamosal suture

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suture, or squamous suture, arches backward from the pterion and connects the temporal squama with the lower border of the parietal bone: this suture...

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Coronal suture

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coronal suture is a dense, fibrous connective tissue joint that separates the two parietal bones from the frontal bone of the skull. The coronal suture lies...

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Sagittal suture

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The sagittal suture, also known as the interparietal suture and the sutura interparietalis,[citation needed] is a dense, fibrous connective tissue joint...

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Fibrous joint

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Frontoethmoidal suture Petrosquamous suture Sphenoethmoidal suture Sphenopetrosal suture Lambdoid suture Coronal suture Squamosal suture Zygomaticotemporal suture Sagittal...

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Base of skull

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Occipitomastoid suture

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The occipitomastoid suture or occipitotemporal suture is the cranial suture between the occipital bone and the mastoid portion of the temporal bone. It...

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The sphenozygomatic suture is the cranial suture between the sphenoid bone and the zygomatic bone. Position of two bones, Animation.   Sphenoid bone   Zygomatic...

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Sphenoethmoidal suture

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The sphenoethmoidal suture is the cranial suture between the sphenoid bone and the ethmoid bone. It is located in the anterior cranial fossa. This article...

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Frontal suture

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The frontal suture is a fibrous joint that divides the two halves of the frontal bone of the skull in infants and children. Typically, it completely fuses...

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Lambdoid suture

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The lambdoid suture (or lambdoidal suture) is a dense, fibrous connective tissue joint on the posterior aspect of the skull that connects the parietal...

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Petrous part of the temporal bone

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inner surface of the squamous portion, to which it is united by the petrosquamous suture, remains of which are distinct even at a late period of life. It...

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Sphenopetrosal fissure

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The sphenopetrosal fissure (or sphenopetrosal suture) is the cranial suture between the sphenoid bone and the petrous portion of the temporal bone. It...

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Palatomaxillary suture

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The palatomaxillary suture is a suture separating the maxilla from the palatine bone. Medial wall of left orbit. v t e...

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Frontoethmoidal suture

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The frontoethmoidal suture is the suture between the ethmoid bone and the frontal bone. It is located in the anterior cranial fossa. This article incorporates...

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Zygomaticotemporal suture

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The zygomaticotemporal suture (or temporozygomatic suture) is the cranial suture between the zygomatic bone and the temporal bone. This is part of the...

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Tympanic cavity

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tympani muscle. Its lateral edge corresponds with the remains of the petrosquamous suture. The Atticus is the part of the tegmentum tympani where the stapes...

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Sphenoparietal suture

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The sphenoparietal suture is the cranial suture between the sphenoid bone and the parietal bone. It is one of the sutures that comprises the pterion. Position...

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Petrotympanic fissure

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eventually attach onto the spine of sphenoid bone. Chorda tympani Petrosquamous suture This article incorporates text in the public domain from page 140...

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Skull

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pieces within the suture known as Wormian bones or sutural bones. Most commonly these are found in the course of the lambdoid suture. The human skull is...

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Sphenosquamosal suture

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The sphenosquamosal suture is a cranial suture between the sphenoid bone and the squama of the temporal bone. Left zygomatic bone in situ Base of the skull...

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while still executing smooth and precise movements. Other joints such as sutures between the bones of the skull permit very little movement (only during...

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Petrous part of the temporal bone sphenopetrosal petrosquamous squamosal Facial: palatomaxillary suture Involving the zygomatic process with sphenoid bone...

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Outline of human anatomy

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Tympanic cavity Mandibular fossa Articular tubercle Petrotympanic fissure Petrosquamous fissure Ethmoid Cribriform plate Cribriform foramina Crista galli Ethmoidal...

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Periodontium

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Petrous part of the temporal bone sphenopetrosal petrosquamous squamosal Facial: palatomaxillary suture Involving the zygomatic process with sphenoid bone...

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The sphenofrontal suture is the cranial suture between the sphenoid bone and the frontal bone. The skull from the side. The skull from the front. Base...

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Schindylesis

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meaning "to cleave", as in cutting with a stump with an axe. This fibrous suture joint can be found between the vomer and the perpendicular plate of the...

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with stitches or covered with a non-resorbable or resorbable membrane and sutured. The swelling of the dental alveoli can result in alveolitis, causing pain...

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Pterygoalar ligament

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Petrous part of the temporal bone sphenopetrosal petrosquamous squamosal Facial: palatomaxillary suture Involving the zygomatic process with sphenoid bone...

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