One of our members, Christy, had ES surgery but it didn’t help much; she went on to be diagnosed with Arcuate Foramina Bridge, which sounds similar. Here’s a link which has a mention & a link to her info…
ES Information: What Else Could It Be? - Welcome / Newbies Guide to Eagle Syndrome - Living with Eagle
I’ve added your research paper in to that category too, thank you for it & the info, I hope you’re able to get to the bottom of what’s causing what…