Does your thighs feel like they are strained when you stand or walk?
Do muscles feel like they are starved for oxygen?
Did they do the doppler test on thighs?
Did they check your legs for PA?
Are you taking a statin drug for cholesterol?
Have you tried meds to help circulation?
Do you take Actonel or Fosmax for osteoporosis?
Do your legs feel achy while in bed, at night, early morning?
Do you have restless legs?
Do you take Vitamin E? (E caused me to have restless legs)

I feel for you, I am going thru similar. Doctor has me taking "grape seed extract" starting this week to see if it will help.

I keep reading that a bar of soap under sheet near legs will stop them for aching and no one knows why it works. Think I will give it a try, even tho, it is far fetched sounding.

If you ever find out what the problem is, please share.