Pterygoid hamulus - Misplaced Pages

Hook-like process of the sphenoid bone of the skull

Pterygoid hamulus
Sphenoid bone. Anterior and inferior surfaces. (Hamulus labeled at bottom left.)
Sagittal section of skull. (Sphenoid is in yellow, and pterygoid hamulus labeled at bottom center.)
Details
Part of	Sphenoid bone of skull
System	Skeletal
Identifiers
Latin	hamulus pterygoideus
TA98	A02.1.05.051
TA2	637
FMA	54722
Anatomical terms of bone[edit on Wikidata]

The pterygoid hamulus is a hook-like process at the lower extremity of the medial pterygoid plate of the sphenoid bone of the skull. It is the superior origin of the pterygomandibular raphe, and the levator veli palatini muscle.

Structure

The pterygoid hamulus is part of the medial pterygoid plate of the sphenoid bone of the skull. Its tip is rounded off. It has an average length of 7.2 mm, an average depth of 1.4 mm, and an average width of 2.3 mm. The tendon of tensor veli palatini muscle glides around it.

Function

The pterygoid hamulus is the superior origin of the pterygomandibular raphe. It is also the origin of levator veli palatini muscle.

Clinical significance

Rarely, the pterygoid hamulus may be enlarged, which may cause mouth pain.

References

This article incorporates text in the public domain from page 151 of the 20th edition of Gray's Anatomy (1918)

^ Putz, R.; Kroyer, A. (1 January 1999). "Functional morphology of the pterygoid hamulus". Anatomischer Anzeiger. 181 (1): 85–88. doi:10.1016/s0940-9602(99)80099-5. ISSN 1618-0402. PMID 10081567.
Sasaki, T.; Imai, Y.; Fujibayashi, T. (2001). "A case of elongated pterygoid hamulus syndrome". Oral Diseases. 7 (2): 131–133. doi:10.1034/j.1601-0825.2001.70212.x. ISSN 1601-0825. PMID 11355439.

External links

Anatomy figure: 22:4b-05 at Human Anatomy Online, SUNY Downstate Medical Center
"Anatomy diagram: 05287.011-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2013-04-22.

Neurocranium of the skull

Occipital

Squamous part	external Inion/External occipital protuberance Occipital bun External occipital crest Nuchal lines Suprainiac fossa planes Occipital Nuchal internal Cruciform eminence Internal occipital protuberance Internal occipital crest Groove for transverse sinus
Lateral parts	Condyle Condyloid fossa Condylar canal Hypoglossal canal jugular Jugular process Jugular tubercle
Basilar part	Pharyngeal tubercle Clivus
Other	Foramen magnum Basion Opisthion

Parietal

Frontal

Squamous part	Frontal suture Frontal eminence external Superciliary arches Glabella foramina Supraorbital foramen Brow ridge Foramen cecum Zygomatic process internal Sagittal sulcus Frontal crest
Orbital part	Ethmoidal notch Fossa for lacrimal gland Trochlear fovea Frontal sinus Frontonasal duct

Temporal

Squamous part	Articular tubercle Suprameatal triangle Mandibular fossa Petrotympanic fissure Zygomatic process
Mastoid part	Mastoid foramen Mastoid process (Mastoid cells) Mastoid notch Occipital groove Sigmoid sulcus Mastoid antrum (Aditus)
Petrous part	Carotid canal Facial canal Hiatus Internal auditory meatus Cochlear aqueduct Stylomastoid foramen fossae Subarcuate fossa Jugular fossa canaliculi Inferior tympanic Mastoid Styloid process Petrosquamous suture (note: ossicles in petrous part, but not part of temporal bone)
Tympanic part	Suprameatal spine

Sphenoid

Surfaces	Superior surface: Sella turcica Dorsum sellae Tuberculum sellae Hypophysial fossa Posterior clinoid processes Ethmoidal spine Chiasmatic groove Middle clinoid process Petrosal process Clivus Lateral surface: Carotid groove Sphenoidal lingula Anterior surface: Sphenoidal sinuses
Great wings	foramina Rotundum Ovale Vesalii Spinosum Spine Infratemporal crest Sulcus of auditory tube
Small wings	Superior orbital fissure Anterior clinoid process Optic canal
Pterygoid processes	fossae Pterygoid Scaphoid pterygoid plates Lateral Medial Pterygoid canal Hamulus
Other	Body Sphenoidal conchae

Ethmoid

Plates	Cribriform plate Crista galli Olfactory foramina Perpendicular plate
Surfaces	Lateral surface Orbital lamina Uncinate process Medial surface Supreme nasal concha Superior nasal concha Superior meatus Middle nasal concha Middle meatus
Labyrinth	Ethmoid sinus ethmoidal foramina Posterior Anterior

Portal:

Anatomy

Categories:

Structure

Function

Clinical significance

See also

References

External links