The Sacral X Axes: Location, Structure, Movement, Parallel Kinetic Ligamentous Loading, Function, Biotensegrity Technology and Pathology. The Essential Pieces of the Low Back Pain Puzzle.

Abstract

In the last century much research was accomplished on the pelvis yet the pelvis remains an enigma. Movement was located and measured, but not specified, comprehended or described. An oblique axis was suspected but not identified. Some function of the pelvis is suspected, but it has not been described or understood. Many practitioners suspect the pelvis to be the source of common low back pain, but just as many practitioners believe this not to be true. Ten years ago two separate points were located that looked like they could function as bony transverse sacral X axes providing the pelvis was symmetrical, however, if and when the pelvis is asymmetrical each point could also function with a related pelvic point and act as an oblique axis. The resting pelvis is unmoving and almost immobile, however, the erect and loaded pelvis is dynamic and filled with kinetic energy. Primary sacral loading is on the posterior interosseous ligaments and serve to suspend the sacrum. The primary loading initiates a secondary loading on the sacrotuberous ligaments that balances the primary loading. These two sets of balanced ligaments create two sets of interactive force couples and a trigger for biotensegrity. During normal gait an initial unilateral posterior innominate rotation on the side of the first step causes the ilial tuberosity to push caudad directly on the lateral sacrum causing a lateral sacral flexion with rotation. The trunk is caused to counter rotate thus decreasing loading forces to the femoral head. When loading is shifted to the contra lateral side on the second step the weight shift takes place with biotensegrity mechanics. Movement is through balanced, interchangeable, parallel, kinetically loaded ligaments that create interactive force couples. None of this was possible to determine without the sacral x axes. This is all way beyond conventional biomechanics. Acute and chronic back pain is essentially all caused from an anterior innominate rotation (lifting, bending lowering, shoveling, sweeping, pregnancy or a postural forward head) that causes the innominates to rotate cephalad and laterally at the PIIS. This is a measurable movement that puts a vertical shear on the lateral axis points and separates the sacral origins of both the gluteus maximus and the piriformis from their ilial origins resulting pain in the buttocks, piriformis syndrome and sciatica. Dysfunction is all initiated at the sacral x axes. This is corrected effectively simply with a manual bilateral posterior innominate rotation that reverses all symptoms leaving the patient free of pain.