I have been diagnosed with L5-S1 slipped pinching the nerve and causing pain to both legs when walking and standing. this has been a ongoing issue for some 20 years and just now found out why. meanwhile i have had a right knee replacement done due to osteoarthritis and the left knee still needs done but is tolerable at this time but my other issue now is my left ankle is extremely painful when walking. i do not know which way to go first. making a appointment now for a foot/ankle ortho to see what the problem is there. any ideas ??