My issue is more the middle scalenes as far as we can tell. Not only that, but I have a nice fibrous band from a CT cervical process that has developed a connection to the 1st rib. So, while I would pursue the PRP or A2M (Sheldon Jordan), I have a built up obstruction that is hard to work around, o surgery of some sort is my option, perhaps with PRP later for spasms, or A2M which is suppose to relieve inflammation, as per Sheldon Jordan. I had PRP for my anterior scalene, no noticeable difference.