Craniometric points Flashcards
ID
Nasospinale- The point where a line drawn between the inferiormost points of the piriformis aperture cross the midsagittal plane; just inferior to acanthion.
ID
Gnathion- the midpoint of the lower border of the human mandible.
ID
Pogonion- the most projecting median point on the anterior surface of the chin.
ID
Prosthion- midline point at the most anterior point of the alveolar process of the maxillae.
ID red X
Alveolare- Located Inferiorly to Prosthion; midline point at the most inferior point of the alveolar process of the maxillae.
ID red X
Incision- point where the upper central incisors meet.
ID blue X
Rhinion- midline point at the inferior free end of the internasal suture.
ID red X
Acanthion- a point at the base of the anterior nasal spine; the point of Vomer, just posterior to the nasospinale.
ID blue X
Asterion- the point behind the ear where the parietal, temporal, and occipital bones meet.
ID blue X
Nasion- midline point where the two nasal bones and the frontal bone intersect.
ID blue x/purple highlight
Glabella- most anterior midline point on the frontal bone; the smooth prominence between the eyebrows.
ID blue X
Ophryon- A central point on the frans; on the midline, just superior to the Glabella.
ID blue x
Bregma- the point of junction of the coronal and sagittal sutures of the skull.
ID blue x
Vertex- Located posterior and superior to the bregma; most superior point on skull in anatomical position
ID blue X
Apex- most superior point on skull measured from the Frankfurt plane (auriculo-orbital plane). the point directly posterior to the vertex.
ID BLUE X
Obelion- a point on the sagittal suture that lies between two small openings through the superior dorsal aspect of the parietal bones.
ID blue X
Lambda- point of juncture of the left and right lambdoidal sutures and superior sagittal suture.
ID blue X
Opisthocranion- this is the most posteriorly protruding point on the back of the skull, located in the mid-sagittal plane. Almost always falls on the superior squama of the occipital bone, and only occasionally on the external occipital protuberance.
ID blue X
Inion- this is the most prominent point in the posterior aspect of the occipital calvarium occurring at the intersection of the left and right superior nuchal lines. It is at the base of the external occipital protuberance.
ID blue X
Orale- This is the most anterior point on the hard palate Where the incisive papilla would be.
ID blue X
Staphylion- this is a single point on the posterior hard palate where the palatal suture is crossed by a line drawn tangent to the curves of the posterior margin of the palatal bones.
ID blue X
Alveolon- the point on the hard palate where a line drawn through the most posterior points of the alveolar ridges crosses the midline.
ID blue X
Infradentale- this is the point between the lower incisor teeth where the anterior margins of the alveolar processes are intersected by the mid-sagittal plane.
ID purple highlight
Basion- this is the midpoint of the anterior margin of the foramen magnum in the mid-sagittal plane directly opposite of opisthion.
ID the most anterior point of the ridge/margin of the foramen magnum at the level of its smallest diameter.
Endobasion- the most anterior point of the ridge/margin of the foramen magnum at the level of its smallest diameter.
ID purple highlight
Opisthion- the median point of the posterior border of the foramen magnum.
ID blue X
Jugale- the point at which the frontal and temporal processes of the zygomatic bone are joined.
ID blue X
Dacryon- This is the midpoint of the sutures of the frontal, maxillary, and lacrimal bones, which occurs on the medial border of the orbit.
ID blue X
Lacrimale- The posterior, superior point of the lacrimal bone that intersects the suture between the frontal bone and the lacrimal bone. Just posterior to the Dacryon.
ID blue X
Maxillofrontale- superior most point on the maxillofrontal suture; the point at which the nasal bone, maxilla, and frontal bone meet
ID blue X’s
Orbitale- the lowest point on the lower edge of the cranial orbit, found on the superior ridge of the zygomatic bone and and just lateral to the zygoorbitale
ID blue X’s
Zygoorbitale- the most medial point found on the zygomatic bone contributing to the inferior margin of the cranial orbit, located on the zygomaxillary suture.
ID purple highlight
Ectoconchion- the most lateral point on the cranial orbit, on a line dividing the upper and lower halves.
ID blue X
Ectomolare- the most lateral point on the exterior surface of the alveolar border.
ID blue X
Endomolare- this is the most medial point on the inner margin (lingual surface) of the socket of the second upper molar. Same spot as ectomolare but on the lingual surface.
ID blue X
Condylion- the lateral tip of the condyle of the lower jaw (condyloid process of mandible).
ID blue X
Porion- the midpoint on the upper margin/ridge of the external acoustic meatus
ID blue X
Mastoidale- The most inferior point of the mastoid process of the temporal bone.
ID purple highlight
Gonion- the point of each mandible closest to the vertex of the gonial angle (mandibular angle).
ID blue X
Pterion- the point on each side of the skull where the parietal and temporal bones meet the greater wing of the sphenoid bone.
ID blue X
Stephanion- the point where the coronal suture crosses the superior temporal line.
ID blue X
Zygion- a point at either end of the bizygomatic diameter; instrumentally determined as the most lateral point on the zygomatic arch.
ID blue X
Zygomaxillare- a point at the most inferior end of the zygomaticomaxillary suture.
ID blue X
Frontotemporale- the point where the temporal line reaches its most anteromedial position on the frontal bone.
ID blue X (most lateral part of the skull)
Euryon- The most lateral points on either side of the skull; typically located on the parietal bones.
ID blue X
Alare- the most lateral point on the ala of the nose.
