Hey dude , I have the exact same symptoms, Atrophy of bicep, pec , shoulder. I had quite a few normal emgs for two years then within the last 3 months went to a new neuro, who thinks it parsonage turner syndrome, same deal arm tires quickly but I can still bench the same weight . Im still not really sure whats going on, same age too im 31, what did your spine MRI show what did your emg show?
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