akinesia
Definition
The absence or loss of normal muscular movement or activity
Clinical context
A 65-year-old man presents to the emergency department with sudden onset of inability to move his left arm and leg. He reports that his limbs feel 'stuck' and he cannot initiate any voluntary movement despite having normal sensation and cognition. His neurological examination reveals complete absence of motor activity in the affected limbs with preserved consciousness and sensation.
Mnemonic
Akinetic limbs = 'A'bsent 'K'inetic movement - 'A'bsent = 'A'kinesia