Spinal Cord Lesions

Question 1

Poliomyelitis

Spinal muscular atrophy

Answer 1

flaccid paralysis (LMN)

Question 2

MS

Answer 2

Due to demyelination
Mostly white matter of cervical region
Scanning speech, intention tremor, nystagmus

Question 3

ALS

Answer 3

Combined UMN and LMN with no sensory, cognitive, or oculomotor deficits

Question 4

Complete occlusion of anterior spinal artery

Answer 4

spares dorsal columns

Question 5

Tabes Dorsalis

Answer 5

Caused by 3o syphilis
Degeneration of the dorsal columns (impaired sensation and proprioception and progressive inability to sense or feel the legs)

Question 6

Syringomyelia

Answer 6

Syrinx expands and damages the anterior white commissure of spinothalamic tract
Bilateral loss of pain and temperature sensation (C8-T1)

Question 7

Vitamin B12 deficiency

Answer 7

Subacute combined degeneration—demyelination of dorsal columns, lateral corticospinal tracts, and spinocerebellar tracts