it is often the positioning of the hips in the sockets. and overtraining anterior abdominal muscles w/out crosstraining the posteriors.
but- seriously, hip fai is a big deal and can in fact lead to sports hernias.
i am not saying that all people with sports hernias have fai, and all people with fai have sports hernias or will ever get one.
but- it is something to seriously look at. ask meyers about it.
there are some hip specialists that work with meyers. those same docs have fixed the hips of both um's and meyers's "failures," and those patients got better.
i am about to be one of them.
although, i wouldn't call um's procedure a failure by any means.
i did go 19 mos of severe pain before surgeries with um. and still in pain after.
but- in the same major blowout injury of my groins, i also broke the rims of my hip sockets and tore the labrums. so there was a total loss of structural integrity and a ton of internal swelling in there.
and, like with many of you, no thanks to the local docs.
so it can easily be multifactoral aside from the pubic bone.