Clonus

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Definition

-  Series of involuntary muscle contractions & relaxations

 

Features

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-   

 

Indications

-   

 

Procedure

-  Loosening of patella then rapid displacement inferiorly

-  Loosening of ankle then rapid dorsiflexion

-  Loosening of wrist then rapid supination

 

Results

-  Positive = >3 beats

-  Upper motor neuron lesions

-   Stroke

-   MS

-   Spinal cord damage

-   Hepatic encephalopathy

-  Serratonin syndrome

-  Pre-eclampsia, eclampsia

 

 

 

References