Hi, and yes, I have heard of nerve ablation, it's also called Rhizotomy. We do those at my office. Always for the neck or back, and I have never seen my doctor do them on the knee area. It's a thought though.. I will ask him about it. I am sorry to hear you are having pain from it and a feeling of a charley horse. That's just awful. I don't have pain at all just the tightness. I will let you know what my doctor says and if he thinks it might be helpful.