This phase is characterized with a loss or change in the normal curve in the spine. Segmental motion may be abnormal but overall motion is probably not affected. More than 80% of people with Phase One Subluxation Degeneration have no pain. Therefore, if left uncorrected, phase one continues to progress with time until it eventually reaches the next phase.
This phase has some of the same characteristics of the previous phase including a loss of normal curvature and position as well as an alteration in segmental motion. In addition, spines with Phase Two Subluxation Degeneration many times show a reduction in the patient's range of motion in that area. X-rays of a phase two begin to show calcium changes or buildup at certain levels of the spine. These changes are sometimes called by many names including spurs and arthritis. Disc spaces between the affected vertebrae are noticeably narrower and may appear to be flattening out.
This phase has all of the attributes of the previous phases, only worse. The curvatures are abnormal, the disc spaces are vastly decreased and changed. Calcium changes on the spine are abundant in this phase. Normally, people in phase three have a restricted range of motion and probably exhibit symptoms of some kind. In phase three the vertebrae show obvious changes and mutations in shape. Projections made of calcium, sometimes referred to as "spurs or lipping", can be readily seen on x-ray.
Phase four is a grave condition that will negatively affect the patients longevity and quality of life. The massive amount of neurological damage caused by years of subluxation that have lead to phase four are probably taking a serious toll on this person's health status. X-rays in phase four show serious severe structural changes. Vertebrae exhibit massive calcium changes, disc spaces appear blurred, and the bones themselves appear fused. In this scenario the patient will have a severe restriction of range of motion in addition to probably a number of other health issues. Reconstruction may not be possible in phase four, but care can be directed to some reduction in subluxation with the goal of improvement in the quality of life remaining.
(Previous information compiled from www.echiropractic.net.)