Cervical Spine Biomechanics - 2 Flashcards
atypical cervical vertebrae
1,2
typical cervical vertebrae
3-6
cervical vertebrae bodies are blank for blank instead of blank
small, mobility, stability
balance between mobility and stability
transegrity
cervical spine has a general laxity to blank and blank
capsule, ligaments
uncinate processes are not present when blank
born
uncovertebral joints are aka
joints of vonluschka
skeletal muscles near C6, osteophytes near C5, and gliding at AA can compromise blank
vertebral artery
extension and rotation causes a blank in blood flow
bilateral decrease
C1 is aka
cradle
c1 structure for weight bearing
lateral masses
oa joint is blank
planar
inferior facets of atlas are slightly blank
convex
oa rotation… both condyles are going blank but sliding blank
superior, opposite (anterior/posterior)
superior facets of lateral zygo joints are blank in c2
convex
inferior facets face blank in C2
medial
aa joint has blank joints
3
1 blank aa joint
pivot
2 blank aa joints
planar
ligament that restrains aa flexion/extension
transverse ligament
amount of flexion/extension at aa
zero
aa joint is blank on blank
convex-convex
rotation of aa causes one side to be blank and blank while the other is blank and blank
inferior/anterior, posterior/inferior
rotation of aa could go superior depending on the blank
starting position
c2 and c3 junction is aka blank
the root
fryette’s law is actually a blank
theory
blank fryettes laws
3
rotation and sidebending to opposite sides are blank
fryettes law 1
rotation and sidebending to same sides are blank
fryettes law 2
typical cervical vertebrae have blank properties
meniscoid
impingement of meniscoid contact lens then it could refer pain and be blank classified
derangement
innervation to capsules of typical vertebrae and can cause referred pain
posterior rami C2-C8
first iv disc of cervical spine
C3-C4
adults do not have the blank component of cervical iv discs
gelatinous
lumbar discs have blank but cervical discs dont
concentric annulus
cervical pain cannot arise from blank fissures in the blank since there is no blank anulus fibrosus in a cervical disc
posterolateral, anulus fibrosus, posterolateral
discogenic pain of cervical is more caused by blank or tears of the blank anulus fibrosus or blank ligament
strain, anterior, PLL
how can we sb left and rotate right in cervical spine in typical vertebrae
aa joint comes into play for rotation
fryette’s law applies to typical vertebrae in sagittal plane blank and blank
neutral, nonneutral
right sidebending of oa, blank and blank glide on blank side
posterior, inferior, ipsilateral
right sidebending of oa, blank and blank glide on blank side
anterior, superior, contralateral
sidebending is like blank on the ipsilateral side and blank on the contralateral side
extension, flexion
right rotation of aa joint makes blank/blank on ipsilateral side and blank/blank on contralateral side
posterior/inferior, anterior/superior
most cervical flexion/extension comes from these vertebrae
c4-c6
these two ligaments separate the dens from the spinal cord by creating posterior and anterior portions of the atlas
transverse, atlantal cruciform
vertical fibers of transverse ligaments connect blank and blank
axis, occiput
paired ligament attaching dens to medial occiput
alar
alar ligament is taut during blank but lax during blank
flexion, extension
alar ligament helps prevent blank displacement of c1 on c2
anterior
whiplash occurs in blank milliseconds
400
alar ligament also helps prevent blank
contralateral rotation
whiplash creates blank because axis of rotation moves blank
compression, up
disk protrusions are when the annular fibers are blank
intact
disk protrusion that is usually laterally
localized annular bulge
disk protrusion that is usually posterior
diffuse annular bulge
disk prolapse is when annular fibers are blank
disrupted
disk prolapse is when blank has migrated through the inner laminar layer but still contained
nucleus
disk extrusion has annular fibers blank
disrupted
nucleus breaks through the outermost layer
disk extrusion
nucleus separates from disk and goes into spinal or iv canal
disk sequestration
disk sequestration has annular fibers blank
disrupted
straight compression forces will damage blank
vertebral endplate
extensors of head/neck are referred to as blank muscles
suboccipital ghost
obliquus capitis superior action
extend/sb ipsilateral
obliquus capitis inferior action
rotate atlas ipsilateral
rectus capitis posterior minor and major action
extend/rotate ipsilaterally
semispinalis capitis action
contralateral rotation (uni), extension (bi)
splenius capitis/cervicis action
ipsilateral sb (uni), extension (bi)
effect where two muscles oppose each other to keep head in neutral position in good posture (allows balance)
guy wire