Fryette's Mechanisms Flashcards
REQUIRED
page 100 of lab manual
three cardinal motions?
rotation, sidebending, flexion/extension/neutral
rotation
motion about a vertical axis in transverse plane
sidebending
motion about an AP axis in coronal plane
flexion/extension
motion about a transverse axis in sagittal plane
neutral?
not single point
-but a range where weight of trunk is borne on vertebral bodies and discs
facets are not engaged**
motion beyond neutral?
engages the facets
fryettes principles
1 - in neutral range, sidebending and rotation are in opposite directions
2 - in sufficient flexion/extension, sidebending and rotation are in same direction
3 - initiating movement of vertebral segment in any plane of motion will modify movement of that segment in other planes
1st and 2nd principles of fryettes?
only apply to thoracic and lumbar**
in neutral position?
sidebending first, then rotation
-in opposite directions
type 1 dysfunctions
tend to occur in groups, often compensating for a single type II dysfunction which is usually at apex or at either end of group curve`
in non-neutral position?
**flexed or extended
rotation first, then sidebending
-in same direction
type 2 dysfunctions
tend to occur alone, but two may be found adjacent to each other
extended type II SDs often result from segmental muscle contraction due to viscerosomatic reflex
type II flexion somatic dysfunction
one facet gets stuck open
when this segment is extended or returned to neutral, one facet will remain open while the other closes
stuck-open facet is the pivot
this segment will rotate and sidebend toward the facet that closes
segment returns to symmetry in flexion
type II extension somatic dysfunction
one facet unable to open (stuck closed)
when flexed or neutral one stuck closed
stuck-closed is pivot
rotation and sidebending will occur toward facet closed
segment returns to symmetry upon extension
-both close
fryettes third principle?
all C, T, L vertebrae
motion in one plane, affects other two
arthrodial restriction
joints
muscular restriction
long paraspinal type I
short paraspinal type II
fascial / ligament restriction
fibrosis, scarring, inflammation can shorten fascia
edema
fluid distends, stretches, and restricts
fryette notation
N neutral F flexed E extended L left R right S sidebent R rotated
type I - sidebending listed first
type II - rotation listed first
how is SD named?
named for ease of motion of direction of freer motion
motion restricted in ___?
SD is opposite to restriction
“findings do not improve in flexion or extension?
must be stuck in neutral mechanics > type I
paraspinal fullness?
group curve likely
rule of 3s
tells you where you’ll find the spinous process of thoracic vertebrae
1-3: same level 4-6: half inch superior 7-9: inch superior 10: 1 inch 11: half inch superior 12: same level
landmarks?
superior scap border - T2
scapular spine - T3
Scapular angle - T7
iliac crest - L4
