Cranial Strain Patterns Flashcards
Axis of Lateral Strain
Two vertical axis
One located at base of sphenoid
One located at base of occiput
What is the lateral strain named for?
Direction of movement of base of sphenoid
In a lateral strain, how do the sphenoid and occiput move in relation to each other?
They rotate in the same direction
(i.e. both clockwise)
Palpatory findings of a Lateral Strain?
Side of strain moves slightly anterior
Axis of Vertical Strain
Two transverse axises
One located at base of sphenoid
One located at base of occiput
What is the vertical strain names for?
Direction of movement of the base of the sphenoid
In a vertical strain how do the sphenoid and occiput move in relation to each other?
Rotate in the same direction
Palpatory Findings of a Vertical Strain
Both hand rotate together around a transverse axis
If rotate forward (thumbs moving away from you) - Superior Strain
If rotate backwards (thumbs moving closer to you) - Inferior Strain
Axis of Torsional Strain
One AP axis which is located through SBS
What is a torsional strain named for?
Named for the greater wing of the sphenoid that is more superior
In torsional strain, how does the sphenoid rotate in relation to the occiput?
The sphenoid and occiput rotate in opposite directions
Palpatory Findings of a Torsional Strain
Think of it like opening a jar
Whatever thumb gets closer to you is the side the torsion is named for
Axis of Sidebending Rotational Strain
Three axis
One AP axis through SBS
Two longitudinal axis (through the base of sphenoid and base of occiput)
What is the sidebending rotational strain named for?
Named for “fuller” side/side of coronal rotation
In sidebending rotational strain, how do the sphenoid and occiput move in relation to one another?
Around vertical axis, they rotate in opposite directions
Around AP axis they rotate in the same direction
Palpatory Findings of a Sidebending Rotational Strain
On one hand fingers get closer together
On other hand fingers get further apart
