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
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Enrollment
600
There is no other intervention.
US Neuropathy Centers
Marietta, Georgia, United States
Changes in motor strength of dorsiflexion of the anterior and lateral compartments of the lower extremity
Each subject will receive the infiltration and then be assessed for any changes in motor strength at 4 and 10 minutes after the injection.
Time frame: From enrollment to end of their treatment at 1 day
Presence of absence of increase in motor strength of the lower extremity in dorsiflexion
Using manual motor testing the strength of the lower extremity in dorsiflexion will be evaluated with a score of 1-5 out of 5.
Time frame: From enrollment to the end of the day
Number of subjects that have increased dorsiflexion strength after D5W infiltration
Subjects will be evaluated by manual motor testing of the patient before and after infiltration of D5W on a 1 to 5 out of 5 mother strength grading.
Time frame: Enrollment to end of clinic vist in 1 hour
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