Intro SCI

Question 1

Classification for Tetraplegia
Classification for Paraplegia

Answer 1

T1 and above
T2 and below

Question 2

What are the 2 most common MOI for SCI?

Answer 2

car accidents and falls

Question 3

How many spinal nerves are in each section of the SC?

Answer 3

8 cervical
12 thoracic
5 sacral
1 coccygeal

Question 4

At what level does the SC end?

Answer 4

L1-L2

Question 5

What landmarks line up with T4, T6, and T10

Answer 5

T4 - nipple line
T6 - bottom of the sternum
T10 - umbilicus

Question 6

What motion does the anterior longitudinal ligament limit?
Posterior longitudinal ligament?

Answer 6

anterior - extension
posterior - flexion

Question 7

What is is the gray matter?
What is in the white matter?

Answer 7

grey - anterior/post horn, cell bodies, SNS, PNS (LMN)
white - axons (UMN)

Question 8

If you have a lesion on the L side, what is the loss of corticospinal

Answer 8

L side damage (ipsilateral)

Question 9

What is in the spinothalamic tract

Answer 9

pain
temp
non-discriminating touch (crude)

Question 10

If you have a L side lesion, what is the ALS loss

Answer 10

R side loss (contralateral)

Question 11

What sensory is in the DCML tract?

Answer 11

proprioception, kinesthesia, discriminating (light) touch

Question 12

If you have R side damage what dorsal column loss are you going to have?

Answer 12

R side loss (ipsilateral)

Question 13

What supplies the anterior 3/4 of the SC? Where does it come off from?

Answer 13

anterior spinal artery
aorta

Question 14

What arteries make up the centrifugal system and what is it supplying?

Answer 14

Sulcal arteries
most of grey matter (cell bodies) , inner half of posterior, lateral and anterior white matter (center)

Question 15

What arteries are centripetal system and what are they supplying?

Answer 15

Pial arteries
dorsal horns, posterior columns (outer cord)

Question 16

what arteries could be damaged in hyperextension injury>

Answer 16

sulcal arteries

Question 17

How many anteior and posterior arteries are there?

Answer 17

1 ant
2 post

Question 18

What supplied DCML

Answer 18

posteior artery

Question 19

What level is UMN injury vs LMN injury?

Answer 19

L1/L2 above –> UMN, below –> LMN

Question 20

(UMN or LMN) above the level of the ant horn cells

Answer 20

UMN

Question 21

(UMN or LMN) alpha still intact below the injury

Answer 21

UMN

Question 22

(UMN or LMN) Effects PNS

Answer 22

LMN

Question 23

(UMN or LMN) effects anterior horn cell

Answer 23

LMN

Question 24

(UMN or LMN) effects nerve root

Answer 24

LMN

Question 25

If you have an injury at C5 and the alpha motor neuron is affected, what levels are LMN and UMN

Answer 25

LMN at C5 UMN at C6,7,8 etc

Question 26

When you have a SCI it affects __ area first and moves __

Answer 26

grey first and move out and up and effects white (axons) last

Question 27

Spinal shock: __ first the goes to __

Answer 27

flaccid, areflexive --> spacticity, hyper-reflexive

Question 28

What is the most common MOI? What kind of fracture? may result in __ syndrom

Answer 28

extreme flexion force (head on collision or blow to back of head) wedge fracture anterior cord syndrome

Question 29

unilateral facet dislocation may result from __ MOI?

Answer 29

combined flexion and rotation

Question 30

axial loading may result in what kind of fracture

Answer 30

burst fracture

Question 31

excessive extension force may result in what kind of fracture? what ligament rupture? what artery is sheared? and __ syndrome?

Answer 31

ant body fracture rupture of ALL shear sucal artery central cord syndrome

Question 32

would you have greater strength in legs or arms with central cord injurt?

Answer 32

legs

Question 33

what is lost with anterior cord syndrome?

Answer 33

pain, temp, motor

Question 34

Brown Sequard: ipsilateral damage __ contralateral damage__

Answer 34

same side: motor, proprioception, vibration, deep touch (DCML) opposite side: pain, temp, crude touch

Question 35

Conus medullaris: damage to __ how will LE and B&B present? (UMN or LMN)

Answer 35

sacral cord and lumbar nerve roots flaccid paralysis of LE and areflexive B&B mixed UMN and LMN

Question 36

cauda equina: damage to __ how will LE and B&B present? (UMN or LMN)

Answer 36

lumbar and sacral nerve roots flaccid paralysis of LE and areflexive B&B LMN