fryette's Flashcards
rotation is …
motion about a vertical axis in the transverse plane
sidebending is….
motion about an anterior posterior axis in the coronal plane
flexion and extension…
motoin about a transverse plane in the saggital plane
is the neutral position a single point?
no its a range
what happens to the inferior and superior facets in extension?
the inferior facet moves down, superior moves upthe space is closed
what happens to the inferior and superior facets in flexion
the inferior moves up and the superior moves downthe facet is open
what are fryett’es principals
In the neutral range, sidebending and rotation are coupled in OPPOSITE directionsIn sufficient flexion or extension, sidebending and rotation are coupled in the SAME directionInitiating movement of a vertebral segment in any plane of motion will modify the movement of that segment in other planes of motion
to what vertebrae do fryette’s 1st and 2nd principles apply?
the thoracic and lumbar but the third principal applies to all three c t and l vertebrae
what occurs first in the neutral position
sidebending then rotation
what type of dysfunction occurs in groups?
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
what does the N mean for remember the type I dysfunction
a group must act as ONEif 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)
what occurs first in a type II dysfunction?
rotation occurs firstthen side bending
which dysfunction type tends to occur alone?
type II
what do type II dysfunctions behave like?
behave like a flexible rulerrotation must occur first before it can sidebendAND occur in the same direction also occur in flexion or extension
remember the FE for type II
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
type II extension SD
one facet is unable to open completely When this segment is flexed or returned to neutral, one facet will open, but the other remains closedThis segment returns to symmetry upon extension when both facets are closed
type II flexion SD
One facet gets stuck openWhen this segment is extended or returned to neutral, one facet will remain open while the other closesBecause both facets are still able to open, the segment returns to symmetry in flexion
what is arthrodial restriction
thin layer adherence at facet jointsmaintained by muscle hypertonicity
what is muscular restriction. what type of dysfunction do the longer paraspinal muscles maintain? and the shorter?
longer paraspinal –> maintain type I-often postural compensation/chronic(erector spinae, splenius, serratous) shorter paraspinal–> maintain type IIoften acute(transversospinal and intersegmental muscles)
what are the types of SD
arthrodialmuscular restrictionfascial and ligamentous restrictionedema
what does translating mean? and what does it induce?
pushing a segmentso 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
when naming type I neutral dysfunction what do you write
sidebending first !whereas rotation will be first for type II
what is SD named for?
the ease of motion
what does a right transverse process that is more posterior than the left indicate
segment is rotated right
