Lesson 1 - Skull

Degree difference between OML and IOML

7 degrees

Degree difference between GML and OML

8 degrees

Glabella

A single bony prominence of the frontal bone located between the superciliary arches in the inferior part of the frontal bone above the root of the nose.

Routine protocol for the skull

AP Axial - Towne PA Axial - Caldwell R and L Lateral

AML

Acanthiomeatal line, line between acanthion and EAM

Top of ear attachment (TEA) landmark

Corresponds with the level of the petrous ridge

Reid's baseline

IOML (infraorbital meatal line)

Acanthion

Junction of the nose and upper lip

Canthomeatal line

Line between outer canthus and eam. Aka OML

MML

Mentomeatal line, line between chin and EAM

Nasion

Midpoint between the eyes just below the eyebrows

Supraorbital margin

The superior rim of the eye socket located on the frontal bone.

interpupillary line

a line used in positioning to ensure that the skull is in a true lateral position

Gonion

angle of mandible

GML

glabellomeatal line, line between glabella and EAM

IOML

infraorbitomeatal line, line between infraorbital margin and EAM

Infraorbital margin

lower rim of orbit

extension

movement of head as if looking at the sky

roatation

movement of the head by turning on an axis to say no

flexion

movement of the head forward to touch chin to the chest

head tilt

movement of the head to the side to place vertex on the opposite side of the chin

OML

orbitomeatal line, line between outer canthus and EAM

Mental Point

tip of chin

Outer canthus

where the eyelids meet farthest from the nose

inner canthus

where the eyelids meet nearest the nose