Cervical Spine Flashcards
‘Typical’ Cervical vertebrae
C3-C6
Cranio-cervical region of spine
Occiput, C1 and C2
Midcervical region of spine
C3-C6
Cervico-Thoracic region of spine
C7-T2
“transition zone” - experiences more wear and tear
Atlas
Role: Support the head
Anterior Arch:
- Tubercle for attachment of ant. longitudinal lig.
- Where dens of axis makes contact
Posterior Arch: Larger than anterior
Large transverse processess for ligaments that connect spine to cranium
Articular Facets of Atlas (C1)
Both are concave
Dens
Rigid vertical axis of rotation on axis (C2)
Makes contact with anterior arch of atlas
Transverse ligament
Holds dens to anterior arch - attaches to lateral masses of atlas
Role: Horizontal stability of the atlanto-axial articulation
Superior articular facets of C2
Convex
Uncovertebral joints
Lip of bone on lateral side of vertebral bodies in C3-C6
AKA Joints of Luschka
Atlanto-Occipital Joint
Primary Motion: Flexion/Extension
Minimal side bend
Rotational motion limited
Atlanto-Axial Joint
Accounts for 50% of all cervical rotation (averages 40-45 degrees each direction)
Right rotation: Posterior-Inferior movement of right lateral mass with anterior-superior movement of left lateral mass (airplane analogy)
Isolating AA Joint
Slowly take up full cervical flexion,
Maintain full flexion while gently rotating to either side
Angle of cervical facet joints
45 degrees
Nuchal Ligament
Limits cervical flexion
Continuation of the suprasinous ligaments