Cervical Vertebrae Flashcards
(25 cards)
What degree are facet joints in the cervical vertebrae
45 degrees
where is the uncovertebral joint
uncinate processes (at uncus body of cervicAL VERTEBRae)
what motions are coupled in the cervical vertebrae
lat flexion and rotation- and they go in the same direction (lat flex to R occurs with rotation to R)
function of cervical vertebrae
stability and protection
mobility
in the cervical spine where is stability most important?
AO and AA joint to support and protect the spinal cord and arteries
what do you see in the difference between these 2 postures on a muscular level?
A: optimal posture, co contraction of muscles contributing to vertical stability
B: excessive tension on levator and semispinalis, RCP maj probubly fatigued
explain how Inhibition, pain, weakness or fatigability of deep flexors (longis colli/capitis) resulting in SCM and anterior scalene becoming more dominant
When the deep neck flexor muscles (like longus colli and longus capitis) are weak, tired, painful, or not working well, the body still needs to keep your head stable and supported. So, it recruits other nearby muscles to help out—like the sternocleidomastoid (SCM) and anterior scalene.
But here’s the problem: those muscles aren’t meant to do the deep stabilizing job. They’re more for movement
explain what happens in soft tissue whiplash
- hyperexstention usually worse than hyperflexion
- longus colli and longus capitis put on strain (internal flexors)-> so because of muscle INTERDEPENDENCE, may not be able to shrug shoulders using traps (1 muscle is dependent on stabilization of another- so neck loses stability)
What conditions are a risk factor for compromising the integrity of the transverse ligament causing instability of C1 and C2
RA and Down syndrome
alar ligament
transverse ligament
Tectorial membrane
Nuchal ligament
what does prolonged cervical protraction result in
upper cervical exstention lower cervical flexion and hunched over (think to keep eyes up)
forward head posture
muscles are in a shortened position over time
causes lengthening of deep neck flexors and scapular retractors
causes tightening of pecs and upper trap/ levator
Explain flexion in the AO joint
Explain exstention in the AO joint
Explain sidebedning in the AO joint
explain rotation at the AO joint
you cant its limited by deep joint congryency
explain rotation in the AA joint
explain if anything happens at the AA joint in exstntion
small tilt
facet orientation of AA joint
arthrokinesmatics of cervical flexion
superior ant upslide
arthrokinesmatics of cervical exstention
inferior/ posterior downslide
arthrokinesmatics of cervical side bending
cont upslide
ips downslide
coupled with rotation
