A friend of mine has some symptoms of sore limbs and I wanted to see if anyone knew what this could be. Her symptoms are legs go numb above the knees anytime she stands or walks for more than 15 minutes. Her limbs are always sore anyhow although she doesn’t exercise. She has seen her physician about this and they placed electric pulsed needles (the tens test) in her and no results, or should I say no answers. She is 61 years old but has suffered the symptoms for over 20 years with no answers. Can anyone share any stories or ideas about this? Thanks.