I’ve dealt with this for a few years, but now seems to be reasonably in check.
First started manifesting as popping in the hip. Bursitis, tight flexors, tight IT, tight TFL, you name it.
Once the hip pain was managed with not running, physical therapy, ART, etc…it seemed to be okay.
Came back a year later, this time as awful pain at the top/outside of the knee. I was sure I had torn meniscus. Turns out it was IT issue, this time manifesting in the knee.
Again, physical therapy work, along with no running, seems to have finally knocked it out. My TFL still gives me a hard time, especially after longer/slower runs, if I’m not diligent with rolling & stretching, but on the whole, it’s much better.
I don’t think that ART/Graston/ultrasound did me any good. What really helped was PT & functional movement therapy. Lots of strengthening, lots of stretching. All sorts of monster walks with rubber bands, controlled lunges, balance boards, step up/downs on blocks, wall washers, etc etc.
That & some really good stretching, combined with a rigorous routine of foam rolling, seems to be the key.
The TFL is a son of a gun though, nearly impossible to stretch!!