Review of Disk Anatomy

Question 1

Intervertebral Disk

Answer 1

Required Inhibition for nutrition…compression and decompression

Question 2

Intervertebral Disc

Answer 2

Symphysis or amphiarthrosis
largest avascular structure in the body
Osmotic System
Allows for motion and stability(ball bearing between the books)

Question 3

Intervertebral Disc

Answer 3

Lamella are oriented in rings that are oriented

65’ to horizontal in oblique fashion to one another

Question 4

Annular Wall

Answer 4

Damage can cause problems–stable but sensitive

Question 5

Disc innervation

Answer 5

Innervation by sinuveterbral nerve
--sensory
--proprioception
--multi-level innervation
Also from sympathetic trunk
Only outer 1/3 of AF is innervated

Question 6

The Sinuvertebral Nerve

Answer 6

Moves up and down the vertebral column one or two disc which can be a challenge to diagnose and treat.

A herniated L4 can present as a L5 injury

Question 7

Degenerative Cascade

Answer 7

Inner wall breakdowns happen 1st Posterior-laterally
1st=disc bulge
2nd Disc herniation–most of disc wall has broken down
3rd Extruded Disc Fragment outside of the spinal cord–Disc wall breakdown

Question 8

L4-L5 disc problems

Answer 8

Irritate L5 Nerve ROOT descending typically

Question 9

Postural Findings

Answer 9

Lateral Shift away from symptoms with posterior lateral herniation

Lateral shift toward symptoms with posterior medial herniation (more central lesion) shift to the side of pain to get the nerve root away from the lesion

Question 10

Cervical Spine annulus fibrosis

Answer 10

Does not have the same angular nerve presentation as the lumbar spine so the presentation of symptoms will be different. Also the annulus is not entirely circular flat dorsally