How do you assess clonus? What is the purpose? How is it charted? and what does it indicate?
Assesses for hyperreflexia at the ankle joint
- Examiner sharply dorsiflexes the foot, maintains the position for a moment and then
- releases the foot
Normal response (negative clonus) is elicited when no rhythmic jerks are felt
Abnormal response (positive clonus) is the rhythmic oscillations of one or more “beats”
Charted as 1, 2, or 3 beats of clonus
3 beats of clonus can suggest impending seizure