Upper Limb signs

Question 1

Pronator Drift?

Answer 1

UMN lesion: supinators weaker vs pronators = net pronation.

Question 2

Spasticity?

Answer 2

Limb difficult to move past certain speed/force.

Pyramidal tract lesion e.g. stroke

Question 3

Rigidity?

Answer 3

Limb difficult to move throughout

Extrapyramidal tract lesion e.g. Parkinson’s

Question 4

Clonus?

Answer 4

Involuntary muscle contract/relax w/PATTERN (UMN)

Question 5

Myoclonic Jerk?

Answer 5

RANDOM involuntary muscle contract/relax (LMN)

Question 6

Reflexes?

Answer 6

Compare to baseline, up to 3 tries.
Brisk: UMN lesion
Diminished: LMN lesion

Question 7

Cerebellar Tremor?

Answer 7

Shaking, under/overshooting on Finger-Nose Test.