Monday, November 3, 2008

Spondylosis: Disease or Natural Response to Stress


Structural changes in the vertebrae may be considered as features which are related to disease. Changes which occur in the intervertebral disc are described as spondylosis. Changes in the facet joints are described as osteoarthritis.

When an osteopath examines an X-ray of a neck that has spondylosis the osteopath will notice osteophytes or bony spurs along the perimeter of the vertebral body i.e. at the junction between the two vertebral bodies and the disc. The osteopath could be forgiven for perceiving these osteophytic changes as part of an aggressive disease attacking the body, however, on closer examination the osteopath begins to understand that it is in fact part of the body's natural response to the mechanical stresses that are applied to the spine throughout life. In other words, it is an active purposeful process in the body, used to compensate for the natural, physiological changes occurring with age.

In a young healthy adult the vertebral disc in between each vertebrae adapts according to the stresses placed on the spine. It is able to do this due to its high water content. With age the disc loses water and hence flexibility – essentially it dries out, becomes less flexible and as a result the surrounding cartilage, the annulus, bears most of the weight.

Eventually, in cases of excess compression along the annulus, ossification starts to develop and can occur around the entire margin of a vertebral body. This can be viewed as if the vertebral body is trying to expand the surface area for articulation in order to distribute the load.

The osteopath must remember that spondylosis and osteoarthritis are not necessarily associated with pain; in fact spondylosis is just as common with people who have symptoms as those who do not have symptoms. Similarly, patients with pain may not have a single trace of spondylosis.

We could therefore conclude that there must be another cause for the pain in people with spondylosis and osteoarthritis and not necessarily the bony changes. As osteopaths this fact supports much of the work that we do. Osteopathy claims to help the body accommodate to changes. Osteopaths are regularly asked whether they treat arthritis. Well, osteopaths don't so much as treat arthritis as they do the patient's whole body – helping it to compensate for any changes that may put stress on the soft tissues.

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