The lumbar spine and pelvis balance on the lower extremities during standing, walking, and running. If leg or foot asymmetries or misalignments exist, abnormal forces transmitted along the closed kinetic chain can interfere with spinal function.

Most chronic low-back pain is the result of some form of structural weakness or failure. The cause of chronic lumbar and spine breakdown is micro-trauma, which is produced by the following conditions:

  • Biomechanical errors
  • Structural asymmetries
  • Tissue weaknesses
  • Excessive external loads

That source is often found to be an imbalance condition in one or both of the feet. The feet are the foundation of the body.

When excessive pronation or arch collapse of the foot is present, a torque force produces internal rotation stresses to the leg, hip, pelvis, and low back.

In patients with degenerative changes in the lumbar discs and facets, the external force of heel strike may aggravate and perpetuate low-back pain.

An anatomical difference in leg length produces abnormal structural strains on the pelvis and low back.

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