Q: What's the difference between herniated disc and anterior pelvic tilt?
Anterior pelvic tilt is an incorrect posture of the pelvis because of it tilting too much forward, eventually leading to muscle tightness and weakness of the muscles around it, then eventually leading to back pain.
A herniated disc (a.k.a. slipped disc) is when the intervertebral discs, the shock absorbers found in between our spine, start to bulge and impinge on the nerves. The probable reason why patients with herniated discs stick their butt out is because this is the position that gives them relief.