Spinal Mechanics

PPT Manipulation and Synergetic Spinal Mechanics

The next stage then is to look at the workings of the pelvis.

The Pelvis

The pelvis is designed to accommodate the action of the hip joints, the sacrolumbar joint, the synthesis pubis joint and the sacroiliac joints.

For a real world theory to apply to the pelvic articulations, the theory has to fulfil working criteria. These criteria are:

1  It has to account for the walking action of the legs.  

2  It has to account for the way the vertebral spine moves to complement the walking mechanism.

3  It has to act as a precursor for the vertebral spine to side-bend and rotate in both forward and backward bending.

4   It has to act as a precursor for the thoracic spine to rotate in lumbar extension.

5   It should not dislocate when completing items 1, 2, 3 and 4.

Nature leaves nothing to chance, all things have their place and function and interact perfectly in harmony with their surroundings. The world we live in is  an  unbelievable engineering feat and when you  observe the human body you are taken aback by how  perfectly it is designed. With such perfection, it is absurd  that nature would design the sacroiliac joints with a built-in flaw that causes them to semi-dislocate every time a person puts their foot forward. Yet this, unbelievably is the basis of  most of current sacroiliac theories.   

When we walk behind someone and observe the action of walking, one of the most obvious movements is that the person sways from side to side with each step. When the pelvis sways to the left the right leg goes forward and when the pelvis sways to the right the left leg goes forward. Yet this basic observation is not accounted for in any of  the current sacroiliac theories.  Let us look at one the most  popular theories: The Nutation Theory

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