Lead guitar player and I were having a bit of a guitar only practice last evening and I was up the neck reaching for a note and I felt something in my left forearm "pop" and felt like a lightning bolt ran through my palm and forearm. It also made me release the neck in an almost violent manner. It kind of freaked me out as I also think I heard whatever happened internally. Sounds really weird. After, I can move everything, but any load on my ring finger really lights up what I assume is the tendon that controls the finger, both in the palm and at a discernible location about 8 inches from my wrist back towards my shoulder, i.e. not the entire length of the tendon. Guess I need to make an appointment with an orthopedist but have any of you experienced anything akin to this? In the meantime, should I treat with pressure (this seems to allow me to load the finger a bit more than without) heat, cold, nothing? Any advice would be appreciated.