#75287
AvatarGina Borgetti-Evans
Participant

The most likely candidate for this clicking is the psoas/ hip flexor complex. The psoas attaches directly from your lumbar spine to the top of your femur, and along the way lies over your pelvis.  Extending the leg will extend the psoas and this can be the mechanism for that “click” sound that you describe as being deep in your hip/ lower back.

Tools for this can be: 
gut smashing of any description and diaphragmatic breathing practice (there are several videos on MWOD featuring Jill Miller discussing the diaphragm and gut smashing)
and some band distraction for the anterior hip 

If these don’t help and/ or the clicking becomes painful it may be worthwhile to see a professional who can get into those deep tissues more specifically.  Good luck!