mod 3 cervical anatomy Flashcards
c0-c1 and c1-2 flex/ext, rot and bend
flex/ext- similar
rot- high on c1-2
lat bend- low all around
60% of all C/S axial rotation is bw what segments
C0-C2
how does the segments move when the head rotates
as the head turns right the atlas moves with it for 30 degrees after which the axis starts to move
Selecki reported observing VA kinking at c1-2 after how much rot
30 degrees
at what angle will you get kinking on the contralat and ipsilateral sides
contra= 30
ipsi=45
what is a red flag for vertebrobasilar insuffiency
Neck pain/stiffness + headache like never before
what are the signs of a suspected stroke (5)
- headache
- neck pain
- hours of vertigo
- current spontaneus nystagmus (uncontrolled eye mvmt)
- neusea
HINTS test for stroke is how sensitive and specific
96-100 sensitive
96-98 specific
How much space for ADI instibility
> 4mm
what is the coupled mvmt at c1-2 with axial rot
vertical translation due to configuration of cartilage of c2 being convex
how does dens shape influence flex/ext + vert translation
more vertical dens will allow for more vert translation
post bent dens will allow for increased ext
IAR for lat bending, flex ext and rot C0-1
lat- up in the skull
Flex/ext- right above dens
rot- the dens
what limits flex at c0-1
contact bw dens and ant margin of FM
what limits ext at c0-1
PLL
what limits lat bending at c0-1
alar ligs
lft bend= left upper and right lower
