Saturday, October 10, 2020

Hoffman sign in neurology

Hello! Let's learn about the Hoffman sign.

The Hoffman sign: Involuntary flexion of the thumb and/or index finger when the fingernail of the middle finger is flicked down. 

Positive Hoffman sign: Upper motor neuron lesion and corticospinal pathway dysfunction due to cervical cord compression.

False-positive: 3% of the population have a positive Hoffman without cord compression or upper motor neuron disease. 


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