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The Phoenix Sign: Is It Due To Vasodilation? Blinded Prospective Comparing The Effects Of Papaverine To Lidocaine Without Epinephrine, Julia Aguirre
The Phoenix Sign: Is It Due To Vasodilation? Blinded Prospective Comparing The Effects Of Papaverine To Lidocaine Without Epinephrine, Julia Aguirre
Symposium of Student Scholars
A neurological phenomenon has been observed clinically that when after a small amount of 1% lidocaine (usually less than .5cc’s) has been infiltrated adjacent to the Common Fibular (Peroneal) nerve under sonographic guidance, in patients with drop foot, or significantly weakened motor potentials of the lower extremity dorsiflexors (Extensor Hallucis Longus (EHL), Tibialis Anterior (TA), and Extensor Digitorum Longus (EDL)), the patient will regain partial or full dorsiflexion temporarily during the effect of this nerve block. This has been named the Phoenix Sign, in reference to ancient Greek folklore, as the non-functioning nerve (like the bird) becomes functional due to …