C/s Foundations (10) Flashcards
What portion of the neck is upper c/s
Occiput-C2
What portion of the neck is mid c/s
C3-C6
What portion of the neck is lower c/s
C7-T1
Describe what a cervical vertebrae looks like (body, SP, foramen, TP)
-small oval body
-wide vertebral arch and lg vertebral foramen
-long bifid SP that points down (not on C7)
-TP attaches mus and lig
What are the 3 ant components of vertebrae
-posterolat lip (uncus)
-pedicle
-TP
What are the 3 posterior components of vertebrae
-lamina
-bifid SP
-sup/inf AP
What is the shape and inclination of the facets
-lower facet is convex, upper is concave
-45 degree inclination
What is another name for uncinate processes
Jt of luschka
What segs are uncinate processes found
C3-7
Fxn of uncinate processes
-prevents vertebrae from sliding back off inf vert and limits SB
Describe what the uncinate processes are
-superior surface of vert below curves up and forms hyaline lip
Describe the components of a disc (annulus fibrosis, direction of fibers)
-annulus fibrosis doesn’t encompass entire perimeter (LACKS POST)
-fibers are vertically post
How are involved n roots ID? Ex?
-ID by caudal seg of intervertebral foramen
-ex. herniated disc w/ C4-5 bulge, affects C5 n root
What % ranges does n root occupy foramina space
25-33%
what 3 structures does the transverse foramen house
-vertebral a
-accessory vertebral v
-vertebral n
where is vertebral a located
lat to longus colli, med to ant scalene
what movement makes vertebral a most vulnerable to compress
C1-2 rot
What pos decreases BF of vertebral a
20 degrees ext and rot
7 cervical myelopathy red flags
-sensory disturb in hands
-hand intrinsic mus wasting
-unsteady gait
-hoffman’s reflex
-hyper reflex
-bowel and bladder probs
-multiseg wk and/or sensory changes
what are the % of movement for upper c/s (rot, flex/ext, overall motion)
-60% rot
-40% flex/ext
-45% overall neck motion
What MOI is upper c/s susceptible to injury
indirect high energy trauma
what does alar lig limit?
flex
describe the slack/limit of alar with cervical motion
-Rot head in one direction, contra lig tightens and ipsilat lig slackens
-Contralat lig limits SB
what jts form the upper c/s
OA and AA jts
