I am a 62 year old female. Good health, still working 8-5 each day. Active but not athletic or exercising each day. I walk about 1/2 mile each day. I have about a 5 inch stretch of numbness on the outside of my left knee, no swelling. I can bend the knee just fine, but, for instance, when I climb on my bed, I cannot roll to the left and put any weight on the knee. Fairly often, I have burning sensation in the numb area. I do not recall any injury ever to the knee.