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OS 4 > 3. Cranial Movements and Strain Patterns > Flashcards

3. Cranial Movements and Strain Patterns Flashcards

1
Q

What is the axis in which midline/unpaired (SBS) bones move?

A

Flexion/Extension

Usually the transverse axis in an AP direction

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2
Q

Which axis do paired bones move about?

A

Internal/External rotation

Usually move about AP axis in lateral/rotation movement

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3
Q

In SBS flexion, which way do the wings of the sphenoid move?

In what axis?

A

Anteriorly about a transverse axis

Vice verse for extension

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4
Q

In SBS flexion, which way does the base of the occiput move?

In what axis?

A

Posteriorly and inferiorly about a transverse axis

Vice versa for extension

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5
Q

Which unpaired bones move in the same direction?

A

Sphenoid and vomer go in the same direction

Occiput and ethmoid move in the same direction

SV OE

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6
Q

In SBS flexion, which way does the vomer move?

A

Anteriorly

Same as the sphenoid!

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7
Q

In SBS flexion, which way does the ethmoid move?

A

Posterior and (Superior)

Just like the occiput

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8
Q

In SBS extension, which way does the vomer move?

A

Posterior

Just like the sphenoid

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9
Q

In SBS extension, which way does the ethmoid move?

A

Anterior and (Inferior)

Just like the occiput

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10
Q

Describe vault contact in terms of the 6 points of contact?

A
  1. Index finger on sphenoid wings
  2. Middle finger are anterior to ear
  3. Ring finger on mastoid
  4. Pinky stretches as far back on occiput as possible
  5. Palms rested on parietals
  6. Thumbs contact the frontal bones
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11
Q

What type of axis(es) does a lateral strain have?

A

Two vertical, parallel axises

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12
Q

Does motion happen about the same direction of axises in lateral strain?

A

Yes!

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13
Q

If your index fingers tip to the right, and your pinky fingers tip left, which type of strain?

What is it named for?

A

Left lateral strain
-named for base of sphenoid!

“Like a parallelogram”

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14
Q

If your index fingers tip left and your pinky fingers tip right, which type of strain?

What is it named for?

A

Right Lateral Strain
-named for base of spenoid

“like a parallelogram”

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15
Q

What type of axis(es) does a vertical strain have?

A

Two parallel axises in a transverse plane

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16
Q

Does motion happen about the same direction of axises in vertical strain?

A

Yes, both will tip backward or forward

17
Q

If your index fingers tip forward away from you, and pinky fingers tip back toward you, what type of strain?

What is it named by?

A

Superior Vertical Strain
-named for base of sphenoid

Like pt is looking down

18
Q

If your index fingers tip backward toward you, and pinky fingers tip forward away from you, what type of strain?

A

Inferior Vertical Strain
-named for base of sphenoid

Like pt is looking up

19
Q

What type of axis(es) does a torsion strain have?

A

One sagittal axis, in an AP plane

20
Q

Does motion in the sphenoid and occiput happen in the same direction during torsion strain?

In what axis?

A

No, different directions

Sagittal

One side will be higher, one side will be lower

21
Q

If your left pinky and index finger are higher than your right pinky and index finger, which torsion is it?

What is it named by?

A

Left torsion

-named for the side that has the higher greater wing of sphenoid

22
Q

If your left pinky and index finger are lower than your right pinky and index finger, which torsion is it?

What is it named by?

A

Right torsion

-named for the side that has the higher greater wing of sphenoid

23
Q

What type of axis(es) does a sidebending rotation strain have?

A

Three

One sagittal (AP plane), and two vertical axises (superior-inferior)

24
Q

Does motion happen about the same direction of axises in sidebending rotation strain?

What happens to the bones?

A

Motion IS in the same direction for sagittal plane (Unlike Torsion)
-greater wing and occiput come together or get farther apart

Motion IS NOT in the same direction for the vertical

25
Q

If your pinky and index finger on your right hand are spread farther apart compared to your left, which sidebending rotation torsion do you have?

A

Right

Named for the side that feels fuller

26
Q

What is Compression Strain due to?

What Axis?

What can it mimic?

A

Trauma, Anxiety, Depression

Sagittal Axis

Other strain Patterns

(Think about this when none of the others fit)

27
Q

In SBS flexion, what is the direction of the sacrum called?

Where does SBS connect to Sacrum at?

If SBS pulls upwards (Flexion), what direction does sacrum move?

A

Counternutition

SBS connected to sacrum at posterior S2
-SBS it pulls upward, sacrum moves posterior

28
Q

In SBS extension, what is the direction of the sacrum called?

Where is SBS connected to sacrum at?

When SBS relaxes, which way does Sacrum move?

A

Nutition==towards the nuts

SBS connected to sacrum at posterior S2
-when SBS relaxes, allows sacrum to tip forward towards the nuts

29
Q

What axis does nutition and counternutition move the sacrum about?

A

Superior Transverse Axis

30
Q

Describe the type of trauma that would create a lateral strain?

A

Hit from the side, either anterior to or posterior to SBS

31
Q

So if you were hit from the right side anterior to SBS, which lateral strain would you have?

A

Left Lateral

-would move base of sphenoid to left

32
Q

So if you were hit from the right side posterior to SBS, which lateral strain would you have?

A

Right lateral

-would move occiput to the left in relation to the sphenoid base=Sphenoid base to the right

33
Q

Describe the type of trauma that would create a vertical strain?

A

Hit from the top or bottom, either in from of or behind the SBS

34
Q

So if you were hit from the top anterior to SBS, which vertical strain would you have?

What about posterior to SBS?

A

Inferior Strain

Superior Strain

35
Q

So if you were hit from the bottom anterior to SBS, which vertical strain would you have?

What about Posterior to SBS from bottom?

A

Superior Strain

Inferior Strain

36
Q

What type of blow would cause a torsion strain?

A

A glancing blow, either anterior or posterior to the SBS (uppercut)
-strikes it from the side and at a diagonal angle

37
Q

Where is the blow to the head that would cause a sidebending rotation strain?

A

Directly at the SBS

38
Q

If you were hit directly on the right SBS, which sidebending rotational strain would you have?

A

Left Sidebending rotation strain

-Right side will come together, left side will feel “more full”

39
Q

Lateral Strain

  • Axis and Plane
  • Direction
  • Named by

Vertical Strain

  • Axis and Plane
  • Direction
  • Named By

Torsion Strain

  • Axis and Plane
  • Direction
  • Named By

Sidebending Rotation

  • Axis and Plane
  • Direction
  • Named By
A

1) Lateral Strain
2 Vertical Parallel Axis
Same Direction
Base of Sphenoid

2) Vertical Strain
2 Parallel Axis in Transverse Plane
Same Direction
Base of Sphenoid

3) Torsion Strain
Sagittal Axis in AP Plane
Opposite Direction
Greater Wing of Sphenoid

4) Sidebending Rotation
1 Sagittal in AP Plane (Same direction), 2 Vertical parallel (opposite direction)
Named by convexity developed

OS 4 (13 decks)

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