Cranial Strain Patterns

Question 1

Sidebending Rotation is named by the side of the . . .

Answer 1

Convexity

*EOC Manual 2017 pg 100

Question 2

For sidebending rotations, the physician will feel fullness on the side of convexity or concavity?

Answer 2

Convexity

Question 3

What is the rotational motion of a side bending strain pattern

Answer 3

Both sphenoid and occiput rotate INFERIORLY together on an A-P axis on the side of convexity of side bending

Question 4

During this strain pattern the sphenoid and occiput rotate in the same direction around parallel vertical axes

Answer 4

Lateral strain

carrying the base of the sphenoid to the left or right of the base of the occiput

Question 5

During this strain pattern the sphenoid and occiput rotate in opposite directions around parallel vertical axes

Answer 5

Sidebending rotation

Question 6

This strain pattern is created from a blow along the AP axis, preventing true flexion and extension.

Answer 6

SBS compression

Question 7

May also present as an alternating vertical strain type

Answer 7

SBS compression

Question 8

BLT guy

Answer 8

Sutherland

Question 9

Evidence for PRM

Answer 9

Frymann

Question 10

Blow along AP axis causes

Answer 10

SBS Compression

Question 11

Caused by a blow from above or below on an ANTERIOR quadrant

-Example: frontal or cheek

Answer 11

Torsion

Question 12

Caused by a blow from above or below on a POSTERIOR quadrant

-Example: occiput or parietal

Answer 12

Torsion

Question 13

Caused by a blow to temporal and parietal region exactly at the level of the SBS causing convexity to the opposite side

Answer 13

Side bending Rotation

Question 14

Caused by a blow laterally to occiput or sphenoid

Answer 14

Lateral strain

Question 15

Caused by a blow to anterior or posterior midline

Answer 15

Vertical strain

Question 16

Describe the Cranial Torsion axis

Answer 16

1 AP axis

Question 17

Describe the Sidebending rotation axis

Answer 17

3 Axis:

• 2 vertical (one thru foramen magnum and one thru body of sphenoid)
• 1 AP (from nasion to opisthion

Question 18

Describe the Superior Vertical Strain axis

Answer 18

Sphenoid and occiput rotate in the same direction around parallel transverse axes

Question 19

Describe the Inferior Vertical Strain axis

Answer 19

Sphenoid and occiput rotate in the same direction around parallel transverse axes

Question 20

Straight from the manual:

Caused by blow to the lateral side of temporal and parietal region exactly at the level of the SBS inducing side bending at the SBS with convexity to the opposite side

Answer 20

Sidebending rotation

Question 21

Straight from the manual:

Caused by a blow on the vertex BEHIND the plane of the SBS but anterior to the occipital axis OR from below through the mouth, anterior to the plane of the SBS, but posterior to the sphenoid axis

Answer 21

Superior vertical strain

Question 22

Straight from the manual:

A blow on the vertex ANTERIOR to the plane of the SBS but posterior to the sphenoid axis OR from below through the heels or mandible, posterior to the plane of the SBS but anterior tot he occipital axis

Answer 22

Inferior vertical strain

Question 23

Straight from the manual:

Caused by a DIRECT lateral blow to the side of the head anterior or posterior to the plane of the SBS

Answer 23

Lateral strain