US Neuropathy Centers
To determine if the Phoenix sign can be reliably elicited with non-guided subcutaneous infiltration of D5W (5% Dextrose in Water) in patients with subclinical weakness of the extensor hallucis longus (EHL) muscle.
* To determine the prevalence of subclinical EHL weakness in a general clinical population * To measure the time course of strength changes following D5W infiltration * To identify potential predictive factors for positive response to treatment
Inclusion Criteria: * subjects must have a weakness of dorsiflexion and specifically of the Extensor Hallucis Longus muscle * drop foot Exclusion Criteria: * Trypanaphobia * allergy to D5W
There is no other intervention.
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