How To Cure Pain And Burning Sensation In Legs?

I fell 3 times last year on my right side in February the same day in the snow been havin pain wen I walk in groin front of thigh outside of thigh from butt down to my knee ..And on my left leg from inner thigh down to my knee it has a burning sensation both legs is as if they are weak I been hopping a year in pain. And when I stand up I have to be careful cause I be hurting and tryin to stand so I can walk