Fryette's mechanics Flashcards

1
Q

rotation is …

A

motion about a vertical axis in the transverse plane

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2
Q

sidebending is….

A

motion about an anterior posterior axis in the coronal plane

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3
Q

flexion and extension…

A

motoin about a transverse plane in the saggital plane

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4
Q

is the neutral position a single point?

A

no its a range

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5
Q

what happens to the inferior and superior facets in extension?

A

the inferior facet moves down, superior moves up

the space is closed

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6
Q

what happens to the inferior and superior facets in flexion

A

the inferior moves up and the superior moves down

the facet is open

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7
Q

what are fryett’es principals

A

In the neutral range, sidebending and rotation are coupled in OPPOSITE directions

In sufficient flexion or extension, sidebending and rotation are coupled in the SAME direction

Initiating movement of a vertebral segment in any plane of motion will modify the movement of that segment in other planes of motion

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8
Q

to what vertebrae do fryette’s 1st and 2nd principles apply?

A

the thoracic and lumbar

but the third principal applies to all three c t and l vertebrae

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9
Q

what occurs first in the neutral position

A

sidebending then rotation

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10
Q

what type of dysfunction occurs in groups?

A

type I

and this is because it is often compensating for a single type II dysfunction which is usually at the apex or at either end of the gruop curve

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11
Q

what does the N mean for remember the type I dysfunction

A

a group must act as ONE

if the car is in neutral you must shit (sidebend) before you turn the wheel (rotate)

in type I you get 1 of each direction ( on the N)

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12
Q

what occurs first in a type II dysfunction?

A

rotation occurs first

then side bending

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13
Q

which dysfunction type tends to occur alone?

A

type II

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14
Q

what do type II dysfunctions behave like?

A

behave like a flexible ruler

rotation must occur first before it can sidebend
AND occur in the same direction
also occur in flexion or extension

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15
Q

remember the FE for type II

A

because there are two letters so flexion or extension and the arrows are pointin in the same direction so rotation and side bending to the same side

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16
Q

type II extension SD

A

one facet is unable to open completely

When this segment is flexed or returned to neutral, one facet will open, but the other remains closed

This segment returns to symmetry upon extension when both facets are closed

17
Q

type II flexion SD

A

One facet gets stuck open

When this segment is extended or returned to neutral, one facet will remain open while the other closes

Because both facets are still able to open, the segment returns to symmetry in flexion

18
Q

what is arthrodial restriction

A

thin layer adherence at facet joints

maintained by muscle hypertonicity

19
Q

what is muscular restriction. what type of dysfunction do the longer paraspinal muscles maintain? and the shorter?

A
longer paraspinal --> maintain type I
-often postural compensation/chronic
(erector spinae, splenius, serratous) 
shorter paraspinal--> maintain type II
often acute
(transversospinal and intersegmental muscles)
20
Q

what are the types of SD

A

arthrodial
muscular restriction
fascial and ligamentous restriction
edema

21
Q

what does translating mean? and what does it induce?

A

pushing a segment

so if you push a segment it will induce sidebending in the opposite direction

so if something translates more easily to the right then it prefers left sidebending

22
Q

when naming type I neutral dysfunction what do you write

A

sidebending first !

whereas rotation will be first for type II

23
Q

what is SD named for?

A

the ease of motion

24
Q

what does a right transverse process that is more posterior than the left indicate

A

segment is rotated right

25
Q

what does it mean when someone says a vertebrae is restricted in right rotation

A

then we know that the vertebrae is rotated left

so whatever direction motion is restricted the SD is in the opposite direction

26
Q

findings do not improve with flexion or extension

A

type I dysfunction

27
Q

findings improve in…

A

if findings improve in flexion, the vertebra is flexed

28
Q

paraspinal fullness/elevation on the left or right side?

A

For neutral curves, this may tell you the side of rotation, from which you could deduce the direction of sidebending.

For type II lesions, this may indicate the side of rotation, which is also the direction of sidebending.
However, this phrase is used primarily for type I lesions.

29
Q

what is the gold standard for diagnosis

A

motion testing

30
Q

what is the rule of 3’s for the thoracic spine

A

T1-T3 spinous process at same level as transverse process
T4=T6 spinous process is a half step below the transverse process
T7-T9 spinous process is a full step below the transverse process
T10- full step
T11- half
T12 same level

31
Q

where is the level of the spinous process of T2

A

superior aspect of scapula

32
Q

where is the level of the spinous process of T3

A

medial aspect of the spine of the scapula

33
Q

where is the level of the spinous process of T7

A

inferior angle of the scapula

34
Q

where is the level of the spionous process of L4

A

iliac crests

35
Q

what are the facets doing in neutral

A

not engaged