i developed anterior femoral glide once i stretched out my hip flexors. turned out tight hip flexors were stabilizing the femur in the pelvis.
i discovered some of the smaller glute muscles were supposed to function to stabilize the head of the femur in the pelvis. to help pull it back so it wouldn't grind on the front.
x band walks wake up the medial glutes.
step-ups onto a high step woke up something else for me (so i was pulling myself up from squatting depth if that makes sense). little stabilizers that lie under the glute max.
i think different people do have different structures on their hip. with respect to how deep / shallow the pelvis socket is and to do with the shape of the femoral head. best to try and get the stabilizers functioning to stabilize rather than resorting to surgery if one can, though.