Motor Neuron Lesion

Question 1

What is the region of the corticospinal tract that could cause hemiparesis sparing sensory function ?

Answer 1

It would have to be a lesion in the corticospinal tract below the cortex and above the medulla.

1. Corona Radiate
2. Posterior Limb of Internal Capsule
3. Basis Pontis
4. Middle Cerebral Peduncle

Question 2

Whare are some causes that could induce hemiparesis with normal sensory function ?

Answer 2

Lacunar infarct into the internal capsule
Basalar infarct into the pons
Infarct of the cerebral peduncle
Demyelination, Tumor Abscess.