C & T Spine Flashcards
Defining features of the c-spine
- 2 projections on spinous process
- 2 projections of TV process
- TV foramen
- Small
Where are the lamina and pedicle
- Pedicle attached to body
- Lamina near the spine
Joints of the C-spine
- Atlanto-occipital
- 2 Lateral atlantoaxial
- Medial atlantoaxial
- Uncovertebral joint
- Facets
- Intervertebral joint
How the facets of the c-spine face
- Superior: post sup/med
- Inferior: ant inf lat
When looking sideways, ~45 degree orientation
Describe the special “Intervertebral joints” of the c-spine
- Uncinate joints
- The vertebral bodies superiorly have a raised lip
The uncovertebral joints serve to:
- Guide flex/ext
- Reduce side bending
Prevent post translation of neighbouring vertebrae - Reinforce the vertebral disk
Defining features of C1
- Atlas
- An anterior and posterior arch, connected by lateral masses
- Has a TV foramen
- Posterior side of superior articular facets have a grove for the vertebral artery
Defining features of C2
- The dens, which has the anterior articular facet
Describe the C0/1 joint
- Atlanto-occipital
- Between the superior articular facets of C1 and the occipital condyles of the skull
- Synovial joints
Has a fibroadipose meniscoid between the joints - Has translation/gliding like the knee and shoulder
- 50-60% flex/ext occurs here
Describe the C1/C2 joint
Lateral(s)
- At a slight angle allowing for lots of rotation
Medial
- Between dens and anterior arch of C1
- Pivot joint
Movement at the atlanto-axial joint
- 50-60% of total rotation of c-spine
- Limited amount of flex/ext and lateral bending
Movement of the c-spine below C2
- flex/ext, most at C4/5
- Lateral flexion, most between C2-5
- Axial rotation throughout
Anterior longitudinal lig (describe + attachments)
- Broad fibrous band
- Occipital bone to sacrum
- Most developed in lordotic areas
- Taut in ext.
Post. longitudinal ligament (describe, thickness)
- Posterior of vertebral bodies, anterior canal
- Narrow fibrous band
- Well developed in kyphotic regions
- Taut in flexion
The 3 ligaments of the spinous processes
Ant -> post
- Ligamenta flava (between lamina)
- Interspinous lig (between spinous processes)
- Supraspinous ligament (on top of spinous processes