Anterior nasal spine

Anterior nasal spine
Left maxilla. Nasal surface (anterior nasal spine labeled at bottom right)
The skull from the side. Anterior nasal spine is at right (shown in red).
Details
Identifiers
Latin	spina nasalis anterior maxillae
TA98	A02.1.12.011
TA2	766
FMA	75770
Anatomical terms of bone [edit on Wikidata]

The anterior nasal spine, or anterior nasal spine of maxilla, is a bony projection in the skull that serves as a cephalometric landmark.^[1] The anterior nasal spine is the projection formed by the fusion of the two maxillary bones at the intermaxillary suture. It is placed at the level of the nostrils, at the uppermost part of the philtrum. It rarely fractures.^[2]

Additional images

Animation. Anterior nasal spine shown in red.
Left maxilla. Anterior nasal spine shown in red.
Skull. Anterior view. Anterior nasal spine shown in red.
Right maxilla. Anterior nasal spine labeled at center left.

References

This article incorporates text in the public domain from page 158 of the 20th edition of Gray's Anatomy (1918)

^ Albarakati, SF; Kula, KS; Ghoneima, AA (January 2012). "The reliability and reproducibility of cephalometric measurements: a comparison of conventional and digital methods". Dento Maxillo Facial Radiology. 41 (1): 11–7. doi:10.1259/dmfr/37010910. PMC 3520271. PMID 22184624.
^ Knipe, Henry. "Anterior nasal spine fracture | Radiology Case | Radiopaedia.org". radiopaedia.org. Retrieved 13 October 2018.

External links

Wikimedia Commons has media related to Anterior nasal spine.

Diagram at upstate.edu - side
Diagram at upstate.edu - front
Anatomy photo:22:os-1911 at the SUNY Downstate Medical Center - "Osteology of the Skull: The Maxilla"
"Anatomy diagram: 34256.000-1". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2012-12-27.
"Anatomy diagram: 34256.000-2". Roche Lexicon - illustrated navigator. Elsevier. Archived from the original on 2013-06-11.

The facial skeleton of the skull

Maxilla

Surfaces	Anterior: fossae (Incisive fossa, Canine fossa) Infraorbital foramen Orbital bones Anterior nasal spine Infratemporal: Alveolar canals Maxillary tuberosity Orbital: Infraorbital groove Infraorbital canal Nasal: Greater palatine canal
Processes	Zygomatic process Frontal process (Agger nasi, Anterior lacrimal crest) Alveolar process Palatine process (Incisive foramen, Incisive canals, Foramina of Scarpa, Incisive bone, Anterior nasal spine)
Other	Body of maxilla Maxillary sinus

Zygomatic

Palatine

Fossae	Pterygopalatine fossa Pterygoid fossa
Plates	Horizontal plate (Posterior nasal spine) Perpendicular plate (Greater palatine canal, Sphenopalatine foramen) Hard palate
Processes	Pyramidal Orbital Sphenoidal

Mandible

Body	external surface (Chin, Jaw, Mandibular prominence, Mandibular symphysis, Lingual foramen, Mental protuberance, Mental foramen, Mandibular incisive canal) internal surface (Mental spine, Mylohyoid line, Sublingual fovea, Submandibular fovea) Alveolar part
Ramus	Mylohyoid groove Mandibular canal Lingula Mandibular foramen Angle Coronoid process Mandibular notch Condyloid process Pterygoid fovea