Myelography and discography

These two investigations involve the injection of dye under X-ray control — either into the discs themselves or into the fluids surrounding the spinal cord.

Such assessments are sometimes useful for the further diagnosis of precise locations of damage to the discs -— literally the shock absorbers between the bones of the spinal column. But such investigations are, by their nature, invasive or involve penetration of body structures and the injection of dye to which some are acutely allergic. These complications, although sometimes difficult to control are not usually serious.

Many physicians prefer to do these investigations only if the patient is prepared to have surgery, because the investigations may sometimes precipitate an acute problem.

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