## Why Anterior Pelvic Tilt Is Not What You Think It Is Anterior pelvic tilt (APT) is the position where the front of the pelvis sits lower than the back. Most corrective programs chase this by prescribing more crunches and more hamstring stretching. Both work poorly, and here is why. The deep issue is not abdominal strength and it is not hamstring length. The deep issue is **lost hip extension**. The pelvis sits in anterior tilt because the hips cannot reach a neutral, fully-extended position in standing or gait. When the hips cannot extend, three things happen in a coordinated compensation cluster: the hip flexors (psoas, rectus femoris, TFL) shorten and stay tonically active, the gluteal complex becomes inhibited, and the lumbar spine extends further to keep the ribcage upright and the eyes level. This cluster sits in the same compensation family as the upper cross covered in the forward head posture piece: a regional position cannot be solved by chasing the local muscle group, because the local group is not the loaded tissue in the pattern. The judgment is the same in both cases: a pelvic position cannot be solved by chasing the abdominal wall or the hamstrings, because neither is the loaded tissue in the pattern. You cannot solve a hip-extension problem with ab strength. You solve it by releasing the chronically shortened hip flexors, restoring gluteal output, and then patterning hip-hinge and split-stance loaded movement so the new range holds under weight. ## How to Tell If You Have It Stand sideways next to a mirror. Find the bony landmark at the front of the pelvis (anterior superior iliac spine) and the bony landmark at the back of the pelvis (posterior superior iliac spine). Draw an imaginary line between them. - Line is roughly horizontal → neutral pelvic position - Front landmark sits below back landmark → anterior pelvic tilt - Front landmark sits above back landmark → posterior pelvic tilt A second self-test: lie supine on the floor. Draw one knee to