12/17/2025
Want to avoid low back pain and optimize core muscle recruitment?
Here's the science:
🧠 1. Spinal Connection: The “Bridge” Between Pelvis and Ribcage
The spine links the pelvis to the ribcage—the lumbar spine connects to the pelvis and the thoracic spine connects to the ribs.
If the pelvis tilts or rotates, it changes the alignment and curvature of the spine.
Example: An anterior pelvic tilt (hips tipping forward) increases lumbar lordosis, which forces the lower ribs to flare and increases tension in the thoracic region.
A posterior tilt can flatten the lumbar curve and pull the ribcage downward, restricting breathing and rib mobility.
Are either bad?
No. But we must be able to move IN and OUT of these positions. If we find ourselves in one position only...trouble is coming.
---
💪 2. Muscular and Fascial Chains
The muscles and connective tissue create continuous tension lines from the pelvis up to the ribs.
Key connections:
Diaphragm ↔ Psoas ↔ Pelvic floor:
These three work as a “core pressure system.” If the pelvis is misaligned, it affects how the diaphragm moves, often causing tightness or pain around the lower ribs.
Obliques & Transverse Abdominis:
Anchor between the ribs and pelvis. Imbalance here (e.g., one side tighter) can torque the ribcage or cause rib intercostal pain.
Quadratus Lumborum (QL):
Connects the iliac crest (pelvis) to the 12th rib. A rotated or elevated pelvis can tighten the QL, pulling on the ribs and creating sharp, aching rib or flank pain.
---
🌀 3. Postural Chain Effects
Pelvic imbalance → compensatory spinal curves → rib rotation.
For example, a rotated pelvis can cause a mild functional scoliosis, which twists the ribcage, straining costovertebral joints and intercostal muscles.
This is why many people feel rib pain or tightness even though the issue originates from below (pelvic or lumbar dysfunction).
---
🌬️ 4. Breathing Mechanics
If the pelvis and diaphragm aren’t aligned, the diaphragm can’t descend properly.
Rib motion becomes restricted.
Breathing becomes upper-chest dominant, increasing tension in the intercostals and thoracic spine—leading to ribcage pain.
---
🧩 5. Chiropractic Perspective
In chiropractic care, practitioners often note that:
Pelvic misalignment alters the base of spinal support.
This creates segmental compensations in the thoracic spine and rib articulations.
Restoring pelvic balance often reduces rib pain and improves respiration and posture.
Moral of the story:
Being adjusted regularly helps your brain find the "sweet spot" in the posture of pelvis➡️ribcage stacking.