I dont know much about Common Iliac Endofibrosis and in particular how ABI's can be normal particularly if the artery is indeed blocked.
Given that this is the diagonosis have you consulted with Dr Bell as too what procedures are required/recommended to recitify the artery.
Was it only in one leg or both.?
Does the common iliac bend when in the riding position.?
Has the artery wall been compromised or is it in good condition.?
Sorry lots of questions.....which I'm sure you will be researching. Good luck.
I haven't decided as yet........but still weighing up my options.