WOW...that's an interesting find-using the volt meter. I've wondered about doing acupuncture or reflexology to relieve the burning. Wondering if anyone has tried that with any success. My left knee is 3 1/2 years post op and my right knee is 2 years 8 months. Both burn ...I feel it all the time except when in a recliner or laying down (I always have a small pillow between my knees because they don't like each other at night). Standing still or just moving around the kitchen is the worst. They are better if I walk distances but I feel every step. I also have tightness/a band feeling if I sit any length of time and start walking. I have an appointment with a neurologist in a 3 1/2 weeks.