-Daniel J Murphy, DC; Spinal Biomechanics, Harrison, 1992, p.31
Before any body part or any body function can be described as "abnormal" or "unhealthy", we must have a clear definition of what "normal" is. For example, if normal blood pressure is 120/80, then a person with blood pressure of 150 would have high, "abnormal" blood pressure.
In only the last few years medical, anatomical, and engineering researchers have been able to clearly define "normal" spinal alignment. This research has been published in the world's most prestigious medical journals.
There are two proven ways to evaluate spinal alignment:
1) postural examination 2) x-rays
Our office utilizes both procedures to evaluate a patient's spine and Central Nerve System. When looking at a person from the front, the spine must be straight. The head, shoulders, hips, and feet should be lined up. When looking at a person from the side the ears should be back over the shoulders and the shoulders should be back over the pelvis. Posture is the window to your spine.
When looking at the front view X-ray, the spinal bones (vertebrae) must also be straight. The bones must not be rotated nor tilted and no curvatures (scoliosis) can be present.
The side view X-ray must reveal three 63° arcs. The most important
63° arc is in the neck (cervical spine). This arc is known as the "Arc of Life" because mental life impulses travel directly from the brain down this part of the spinal cord to bring life to the rest of the body. People who lose their Arc of Life do not live as long because it causes severe obstruction to the brain, spinal cord, and nerves (Central Nerve System).
The pictures below show "normal" posture and "normal" spine position and alignment.