A warm sensation that rushes up the inside of my right knee. Not uncomfortable and no pain, but starting to happen a lot more frequently. I do have one leg shorter than the other due to C.D.H operation to my left hip. I also have Scoliosis with a full length harrington rod to my spine. Had the operation aged 14. I am now 37 years of age. Occaisionally suffer arthritis to my hips and back.