Spinal Cord Lesions

Question 1

Which tracts are exta-pyramidal?

Answer 1

Reticulospinal
Vestibulospinal
Rubrospinal
Colliculospinal

Question 2

Posterior spinal artery

Answer 2

supplies dorsal column (2 arteries, 1 for each side)

Question 3

Anterior spinal artery

Answer 3

supplies anterolateral part (only 1 artery suppling both sides)

Question 4

Small Central Lesions result in loss of…

Answer 4

Spinothalamic (pain & temp)

Bilateral - because lesion is where they cross over

Question 5

Small Central Lesions are common in the ____ spinal cord, resulting in this symptom pattern

Answer 5

Cervical

Shawl pattern

Question 6

Large Central Lesions result in loss of…

Answer 6

Mechanosensation - bc dorsal columns now blocked too.

Still also same symptoms as Small Central Lesions

Question 7

Syringomyelia

Answer 7

Cyst in central spinal cord (often C-Spine).

Progressive growth can = compromised ascending + descending paths, loss of mechanosensation.

Question 8

Dorsal Column Lesions result in loss of…

Answer 8

Mechanosensation

May be unilateral or bilateral

Question 9

Tabes Dorsalis

Answer 9

Form of syphilis, Dorsal Column Lesion.

Bilateral loss of Mechano + Proprio.

Question 10

2 major symptoms of Tabes Dorsalis

Answer 10

Sensory Ataxia gait pattern: wide stance, gaze down, stomping.
Romberg’s Sign: lose balance with standing w/ feet together + eyes closed.

Question 11

Brown Sequard - how is mechanosensation affected?

Answer 11

Ipsilateral loss

Below level of lesion

Question 12

Brown Sequard - how is pain/temp affected?

Answer 12

Contralateral loss

Below level of lesion

Question 13

Brown Sequard - where does UMN Syndrome occur?

Answer 13

Ipsilateral

Below level of lesion

Question 14

Brown Sequard - where does LMN Syndrome occur?

Answer 14

Ipsilateral

At level of lesion