The sphenoidal spine (Latin: "spina angularis") is a downwardly directed process at the apex of the great wings of the sphenoid bone that serves as the origin of the sphenomandibular ligament. [1]

The spine of sphenoid bone is a downward-pointing bony protrusion located at the skull's base. Precisely situated at the confluence of the posteromedial and posterolateral borders of the greater wing of the sphenoid bone, this structure is positioned just posterior to the foramen spinosum.

2023年10月30日 · Foramen spinosum, traversed by the middle meningeal vessels and usually the spinous nerve, a branch of the mandibular nerve. Between the body, lesser and greater wings is a large opening known as the superior orbital fissure …

2024年1月3日 · The sphenoid bone is one of the eight bones that make up the cranium – the superior aspect of the skull that encloses and protects the brain. Its name is derived from the Greek ‘sphenoeides’, to mean wedge-shaped. In this article, we shall look at the anatomy of the sphenoid bone – its location, structure, and clinical significance.

2018年2月8日 · The sphenoidal spine, located medially to the articular tubercle of the temporal bone, can be identified by the presence within its base of foramen spinosum while the sphenoidal tubercle, individually variable as morphology, projects supero-laterally to the PMF.

2022年4月18日 · The inferior surface presents a triangular spine in the middle line, the sphenoidal spine or rostrum, which is continuous with the sphenoidal crest on the anterior surface. It also has a deep fissure between the alae of the vomer.

2023年7月24日 · The sphenoid is just one of the twenty-two bones that form the skull and essentially helps to connect the neurocranium to the facial skeleton. It is a single bone in the midline of the cranial cavity situated posterior to the frontal bone but anterior to the occipital.

spine of sphenoid bone [TA] a posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so named for its proximity to this spine; gives attachment to the sphenomandibular ligament.

2023年12月12日 · The sphenoid bone encompasses a central body, alongside two lateral paired wings on both sides – the lesser and greater wings – and two pterygoid processes. This distinctive structure gives the bone a noticeable bat-, butterfly-, or wasp-like appearance.

A posterior and downward projection from the greater wing of the sphenoid bone on either side, located posterolateral to the foramen spinosum, so named for its proximity to this spine; gives attachment to the sphenomandibular ligament.