Yeah I do Trevor. In more places they just my knee.
Do you get yours at any particular point during the day? I tend to get them at night.

Ian I get mine at night as well

Yes knees back collar arms and ankles

Sometimes I have this electric current (constant humming) sensation/vibration in the muscle right above the knee where it meets the knee. The size of the vibrating area is like a hand. The name of the muscle ""The vastus lateralis muscle, also known as the vastus externus, is the largest and strongest muscle in the quadriceps femoris, a group of muscles in the thigh. It's located on the outside of the thigh, connecting the kneecap and thigh bone.
I had it humming constantly for several weeks so I visited my doctor. We did endless amount of blood tests, came out normal. She sad she would to a muscle biopsy to see if I have small fiber neuropathy (SFN). The vibrating sensation comes and goes (always exactly the same area) feels like electric currents stimulating it just one push after the other, almost like the muscle is shivering. Uncomfortable but does not hurt. Very concerning when I have it. The first episode lasted about 2-3 weeks. Did not do the muscle biopsy yet.

No never had that. Have you tried taking magnesium? It works for restless leg maybe it will help that as well. You know what I am going to take that back I sometimes do get like an electrical zap just above my knee it doesn't happen to often and it hurts LOL! I usually and a fibro cream on the spot and get up and walk around which helps.