Anatomy

Question 1

Joint type: vertebral body-intervertebral disc

Answer 1

Fibrocartilaginous

Question 2

Type of joint: posterior facet joint

Answer 2

Synovial

Question 3

Components of the anterior column (Denis Three Column Theory)

Answer 3

1. Anterior longitudinal ligament
2. Anterior annulus (disc)
3. Anterior 2/3 of vertebral body

Question 4

Components of the middle column (Denis Three Column Theory)

Answer 4

1. Posterior 1/3 of vertebral body
2. Posterior annulus (disc)
3. Posterior longitudinal ligament

Question 5

Components of the posterior column (Denis Three Column Theory)

Answer 5

1. Posterior arch (pedicles, lamina)
2. Spinous processes
3. Transverse processes
4. Facet joints
5. Spinous ligaments (supraspinous and interspinous, ligamentum flavum)

Question 6

Nucleus pulposus

Answer 6

Central gelatinous fluid of an intervertebral disc

Question 7

Annulus fibrosus

Answer 7

Collagen, 10-20 concentric lamellae arranged at 30° to each other

Surrounds nucleus pulposus

Question 8

Elastic restraints (4)

Answer 8

Joint capsule
Ligaments
Fascias
Tendons

Question 9

Most common site of disc injury

Answer 9

Posterolateral (due to location of maximum strain and shear with flexion and lateral bending)

Question 10

Components of anterior column (three column model).

Answer 10

1. Anterior longitudinal ligament (ALL)
2. Anterior annulus (disc)
3. Anterior 2/3 of vertebral body

Question 11

Components of middle column (three column model).

Answer 11

1. Posterior longitudinal ligament (PLL)
2. Posterior annulus (disc)
3. Posterior 1/3 of vertebral body

Question 12

Components of posterior column (three column model).

Answer 12

1. Posterior arch (pedicles and lamina)
2. Transverse and Spinous processes
3. Facet joints
4. Supraspinous and Interspinous ligaments
5. Ligamentum flavum