Cervical Spine Flashcards
C-spine vertebral anatomy
C1 and C2 - atypical
- C1 - no spinous process or vertebral body
- C2 - dense
C2-C6 have bifid spinous processes
Foramen transversarium in C1-C6 - vertebral artery
C-Spine palpable landmarks
TP of C1 between angle of mandible and mastoid process
C2 highest palpable SP
C2-C7 have articular pillars “string of pearls”
Insertion points of scalene muscles
Rib 1 - anterior and middle scalenes
Rib 2 - posterior
“I get up at 1AM 2P”
Scalenes relationship to brachial plexus
branchial plexus runs between anterior and middle
Tight scalenes can compress branchial plexus and give neuro sx in ipsilateral arm
-Thoracic outlet syndrome
Suboccipital muscles
Rectus capitis posterior major
Rectus capitis posterior minor
Obliquus capitis inferior
Obliquus capitis superior
Connect occiput, C1, C2
Insert at superior nuchal line
involved in OA movement
Hypertonicity - tension headache
Tx: suboccipital release
Trapezius
Origin: external occipital protuberance - inion
Levator scapulae
Origin C1-C4
Sidebends C-spine
Alar and transverse ligaments
Alar: sides of dens to lateral margins of foramen magnum
Transverse: attaches to lateral masses of C1 to hold dens in place
RA and Down’s weaken ligaments -> atlanto-axial subluxation
Rupture -> catastrophic neurologic damage
Spinal ligaments
Ligamentum nuchae - spinous processes of cervical spine
Ligamentum flavum - C2 to sacrum
Posterior longitudinal ligament - C2 to sacrum, narrower as it goes down. prevents posterior herniation of vertebral disk, thin in lumbar = more herniations at that location
Anterior longitudinal ligament - anterior surface of vertebral bodies to sacrum
- injured in whiplash
- prevents anterior displacement of cervical vertebrae on each other
Joint of Luschka
C2-C7
articulate with vertebrae below
Uncinate processes - superior projection limits lateral disc herniation to protect cervical nerve roots
OA motion
Side bending and rotation opposite ALWAYS!
Influence of Vagus N.
AA motion
C1 motion on C2
Rotation
Sidebending and rotation opposite
C2-C7 motion
flexion, extension, side bending, rotation
SB and Rotation to same side ALWAYS on boards
Can have flexion, extension, neutral component
C2-C4 - main motion rotation
C5-C7 main motion sidebending
OA diagnosis
Translation: use fingers trick.
- right translation = force from left to right = left side bending
- check in flexion and extension as well as neutral
Sidebending and rotation always opposite
AA diagnosis
flex neck up to 45 degrees then test rotation