Question

Pronator drift is a sign of dysfunction where in CNS?

a) Lower motor neuron lesion
b) Upper motor neuron lesion
c) Basal ganglia lesion
d) Brainstem lesion

Answer 1

Pronator drift is a sign of dysfunction in the upper motor neuron in the CNS. It is commonly seen in conditions such as stroke or multiple sclerosis.

Step-by-step explanation:

Pronator drift is a sign of dysfunction in the upper motor neuron in the CNS. When there is damage to the upper motor neuron, the patient may exhibit pronator drift, which is the involuntary drift of one arm into a pronated position when held straight out with the palms facing upward. This sign is commonly seen in conditions such as stroke or multiple sclerosis.