Final Exam

Question 1

Transverse Cord Lesion

Answer 1

All sensory and motor pathways are either partially or completely interrupted

Causes: Trauma, Tumor, MS, Transverse Myelitis

Question 2

Hemicord Lesions (Brown-Sequard Syndrome)

Answer 2

Ipsilateral UMN weakness (lateral corticospinal tract damage)

Ipsilateral loss of sense for vibration and proprioception (PCML damage)

Contralateral loss of pain and temp (ALS damage)

Causes: MS, trauma

Question 3

Central Cord Syndrome (small lesions)

Answer 3

Bilateral regions of sensory loss to pain and temp (damage to spinothalamic fibers crossing ventral commissure)

Question 4

Central Cord Syndrome (large sessions)

Answer 4

LMN deficits at level of lesion (Damage to anterior horn)

Affected corticospinal tracts cause UMN signs and PCML involvement

Causes: SC contusion, tumor, non-traumatic or post-traumatic event, syringomyelia

Question 5

Posterior Cord Syndrome

Answer 5

Loss of vibration and proprioception (PCML damage)

Larger lesions - UMN weakness (damage to lateral corticospinal tracts)

Causes: Trauma, compression from tumor, MS, vitamin b12 deficiency, and tabes dorsalis

Question 6

Anterior Cord Syndrome

Answer 6

Loss of pain and temp below level of lesion (ALS damage)

LMN weakness at level of lesion (damage to anterior horn)

Larger lesions - UMN sings (damage to lateral corticospinal tracts)

Causes: Trauma, MS, anterior spinal artery infarct