Posterior Longitudinal Ligament Flashcards Preview

Spinal Anatomy I - Exam 3 > Posterior Longitudinal Ligament > Flashcards

Flashcards in Posterior Longitudinal Ligament Deck (20):
1

What is the classification of the posterior longitudinal ligament-vertebral body joint?

fibrous (amphiarthrosis) syndesmosis

2

What vertebral levels will the posterior longitudinal ligament attach to?

those between C2 and S3 inclusive

3

What are the specific bony attachment sites for the posterior longitudinal ligament?

- the posterior inferior epiphyseal rim of vertebral body C2
- the posterior superior epiphyseal rim and posterior inferior epiphyseal rim of each vertebral body C3-S2
- the posterior superior epiphyseal rim of the S3 vertebral body

4

What will the posterior longitudinal ligament attach to in addition to vertebral bodies?

the intervertebral disc

5

Newer research suggests what regional variation in the posterior longitudinal ligament?

prominent in the cervicals, occasional in the thoracics, rare in the lumbars

6

What is the relationship of the posterior longitudinal ligament to the vertebral foramen?

if forms the anterior boundary of the spinal canal

7

What is the extent of the posterior longitudinal ligament attachment laterally?

it is not firmly attached to the intervertebral disc, making the area susceptible to herniation or protrusion

8

What is the appearance of the posterior longitudinal ligament in the cervical spine?

it is parallel along its lateral margins

9

What is the appearance of the posterior longitudinal ligament along the thoracic spine?

- it is parallel along its lateral margins in the upper thoracic spine
- hourglass shaped in the lower thoracic spine

10

What is the appearance of the posterior longitudinal ligament in the lumbar spine?

it is hourglass shaped along its lateral margins

11

What is the innermost layer of the posterior longitudinal ligament called?

the perivertebral ligament

12

What innervates the posterior longitudinal ligament?

the posterior neural plexus formed by fibers from the recurrent meningeal nerve/sinus vertebral nerve/sinu-vertebral nerve

13

What is the function of the posterior longitudinal ligament?

it brakes or limits flexion of the vertebral column

14

Where is ossification of the posterior longitudinal ligament most commonly identified?

the cervical spine with an 80% incidence

15

What is the clinical sign of posterior longitudinal ligament ossification in the cervical spine?

a loss of hand and finger dexterity

16

What is the incidence of posterior longitudinal ligament ossification in the thoracic and lumbar spine?

- thoracic: about 10%
- lumbar: about 10%

17

What is the clinical sign of posterior longitudinal ligament ossification in the lumbar spine?

faltering gait

18

What is the gender, age, and ethnic bias associated with ossification of the posterior longitudinal ligament?

it is greater in males over 50 and has a higher incidence in the Japanese

19

What is the acronym for ossification of the posterior longitudinal ligament?

OPLL

20

At one time ossification of the posterior longitudinal ligament was an example of what condition?

Diffuse Idiopathic Skeletal Hyperostosis (DISH)

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