In lower cross syndrome, which muscle group is facilitated?

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In lower cross syndrome, certain muscles are overactive (facilitated) while others are underactive (inhibited). The hip flexors, specifically the iliopsoas and rectus femoris, are commonly tight and overactive. Their contraction pulls the pelvis into anterior tilt, contributing to the increased lumbar lordosis that characterizes this pattern. That makes the hip flexor group the facilitated one in this scenario. Abdominals and gluteus medius are typically weak, not overactive, which helps explain the posture. While the lumbar extensors can also be overactive, the hip flexors are the classic group most directly linked to the syndrome’s posture.