Sphenobasilar Synchondrosis Dysfunction

Question 1

When the sphenoid and occiput are forced together, it is called ________.

Answer 1

Compression

Question 2

A head with a extension dysfunction will have an increased ________ and a decreased ________.

Answer 2

Length, width (Bert head)

Question 3

During cranial flexion, the occiput rotates about a ________ axis. The basilar part and condyles move _______ and ________ while the squamous portion moves ________ and ________.

Answer 3

Transverse, anteriorly, superiorly, posteriorly, slightly laterally

Question 4

In vertical strains, the sphenoid and occiput rotate in the same direction around their own ________ axes.

Answer 4

Transverse

Question 5

In a SBS torsion strain, the sphenoid and occiput rotate in the same direction.

True or False?

Answer 5

False

Question 6

In side-bending and rotation, the occiput and sphenoid rotate in ________ directions around ________ axes. However, the occiput and sphenoid rotate in the same direction around ________ axes.

Answer 6

Opposite, parallel vertical, A-P

Question 7

During cranial flexion, the parietal bones move ________.

Answer 7

Laterally

Question 8

Side-bending and rotation are named for the side of the ________.

Answer 8

Convexity

Question 9

In lateral strains, the sphenoid and occiput rotate in the same direction around two parallel ________ axes.

Answer 9

Vertical

Question 10

The manifestation of the primary respiratory mechanism in the head is called the ________.

Answer 10

Cranial rhythmic impulse

Question 11

What axes do the sphenoid and occiput rotate about in vertical strains?

Answer 11

Transverse

Question 12

Lateral strains are named for the direction the ________ shifts.

Answer 12

Basisphenoid

Question 13

SBS side-bending and rotation strain involves three axes. One is a vertical axis through the foramen magnum. Another is an A-P axis through the cranial vault. What is the third axis?

Answer 13

A vertical axis through the body of the sphenoid

Question 14

The physiologic strains are ________, ________, and ________.

Answer 14

Flexion/extension, torsions, side-bending and rotation

Question 15

The cranial vault hold consists of placing the four fingers in specific locations on each side of the skull. These locations are as follows:

Index fingers —> ________

Long finger —> ________

Ring finger —> ________

Little finger —> ________

Answer 15

Greater wing of the sphenoid

Temporal bone anterior to ear

Temporal bone posterior to ear

Occiput

Question 16

Vertical strains are named according to the position of the basilar process of the ________.

Answer 16

Sphenoid (basisphenoid relative to the basiocciput)

Question 17

Describe what your hands will feel when palpating a patient’s head with a right SBS torsion.

Answer 17

Right index finger will be higher

Question 18

How is side-bending and rotation SBS strain pattern named?

Answer 18

For the side of the convexity

Question 19

Cranial motion patterns are described around the reference point known as the ________.

Answer 19

Sphenobasilar synchondrosis (SBS)

Question 20

Torsions are named for the greater wing of the sphenoid that is ________.

Answer 20

Superior

Question 21

Lateral strains can be felt by the ________ fingers moving left or right.

Answer 21

Little

Question 22

What axes and direction of motion are involved in a patient with a lateral SBS strain?

Answer 22

Vertical - same direction

Question 23

Which of the following is a non-physiologic SBS strain?

Left torsion
Right lateral strain
Left side-bending and rotation
Flexion
Extension

Answer 23

Right lateral strain

Question 24

During cranial flexion, the sphenoid rotates about a ________ axis. The greater wings move ________, ________ and ________.

Answer 24

Transverse, anteriorly, inferiorly, slightly laterally

Question 25

Non-physiologic dysfunctions are typically associated with ________.

Answer 25

Trauma

Question 26

About which axis do SBS torsions rotate?

Answer 26

A-P axis

Question 27

Torsions occur along an ________ axis with the sphenoid and occiput rotation in ________ directions.

Answer 27

A-P, opposite

Question 28

A head with a flexion dysfunction will have an increased ________ and a decreased ________.

Answer 28

Width, length (Ernie shaped head)

Question 29

During cranial flexion, the temporal bone ________ along an axis along the petrous portion.

Answer 29

Externally rotates

Question 30

A parallelogram shaped head in an infant refers to a ________ strain.

Answer 30

Lateral