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]
petrosquamous, suture, petrosquamous, suture, cranial, suture, between, petrous, portion, squama, temporal, bone, forms, koerner, septum, petrous, portion, forms, medial, component, osseous, margin, while, squama, forms, lateral, component, anterolateral, port. 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 Petrosquamous sutureTemporal bone at birth Inner aspect Base of the skull Upper surface Temporal bone is in pink DetailsIdentifiersLatinsutura petrosquamosaTA98A02 1 06 075TA2718FMA55466Anatomical terms of bone edit on Wikidata 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 See also editPetrotympanic fissureReferences edit a b The Petrosquamosal Sinus CT and MR Findings of a Rare Emissary Vein American Journal of Neuroradiology 2001 pp 1186 1193 nbsp This article incorporates text in the public domain from page 142 of the 20th edition of Gray s Anatomy 1918 External links editDiagram Portal nbsp Anatomy nbsp This human musculoskeletal system article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Petrosquamous suture amp oldid 936616456, wikipedia, wiki, book, books, library,
