I love how you call your acupuncture needle a dry needle. Dry Needling is Orthopedic anatomy based acupuncture. Any Chinese acupuncturist who works in orthopedics does exactly what you are doing. Call it what you want, you are using acupuncture needles. No such thing as a "dry needle" per se. Just sayin. And the application of electrical stim as you are doing is part and parcel of Chinese style orthopedics, that point you are on is Zu San Li and we needle ist 1.5 inches deep, with estim, for drop food, for example.
You’re not wrong. We do use the same needle, just with different schooling under our doctorate. However we are not acupuncturists which is why the APTA deemed the service “dry needling” when performed by a licensed physical therapist. The term was chosen because it is not a “wet needle” which is used to deliver medications or fluid. Acupuncture is a broad term while all we do is orthopedic based dry needling. Thank you for your comment.
They don't call it acupuncture needles because they're not performing acupuncture with them. It's to differentiate what practice is being used. Very simple to understand.