Cervical Flashcards
What is continuous of the PLL?
What does it limit?
Tectorial ligament
Limits Flexion
What is continuous with the ALL?
What does it limit?
Anterior atlanto-occipital membrane
Anterior atlantoaxial membrane
Limit extension
How are the atlas facets arranged?
Superior facets= concave (horizontal plane)
Inferior facets = convex
How are the axis facets arranged?
Superior facets = face upward/laterally
Inferior facets = face anteriorly
What prevents anterior displacement of C1 on C2?
Transverse ligament
What will fracture before the transverse ligament will tear?
Dens
The transverse lig has decrease integrity with?
RA
DOWN SYNDROME
Where is the disc the thickest in cervical?
Anteriorly
What keeps the nucleus in place in the disc?
PLL
What are herniations caused by?
damage to PLL
Why is the cervical intervertebral disc different?
Annulus not stressed with flex/rotation
Lower cervical how are the superior facets arranged ?
Flat/oval
Face Superiorly/Posterioly
Lower cervical how are the inferior facets arranged ?
Interior/anterior
Lie closer in frontal plane
Arthro of Flexion @ Atlanto occipital joint?
Occipital rolls forward
Glides posterior
Convex on concave
Atlantoaxial joint moves?
Rotation
One thing that limits extension in lower cervical spine?
Zygapophyseal joint
Disc
Action of trapezius ?
Extension
Ipsilateral lateral Flexion
Contralateral rotation
Action of levator scapulae?
Ipsilateral Flexion/rotation
Produce posterior shear
Increase activity with forward head
Action of scalenes?
Frontal plane stabalizers Breathing Flexion Ipsilateral Flexion Contralateral rotation
Action of longissimus capitis and cervicis?
Compression
Stabalize head
Frontal plane stabalizers
Suboccipital muscle actions?
Occipital extension
Ipsilateral rotation
lateral Flexion
Splenius capitis/ cervicis action?
Prime mover Extension Ipsilateral rotation Not active @ rest Can be source of headaches
Action of SCM
Ipsilateral Flexion
Contralateral rotation
Longus capitis/ colli action ?
Compression of cervical spine
Stabilizers, synergy w/ upper traps
