Spinal discs have a very poor blood supply, they depend upon the
circulation of joint fluids to bring in nutrients and expel waste. If a
spinal joint losses its normal motion and this pumping action is impaired,
the health of the disc deteriorates.
Like a wet sponge, a healthy dics is flexible. A dry sponge is hard, stiff,
and can crack easily. This is how many disc problems begin.
Because of the way each disc is attached to the vertebra above and below it,
a disc cannot "slip" as commonly thought. However, trauma or injury to the
spine can cause disc to buldge, herniate, or worse rupture. This can be
quite painful, putting pressure on the spinal cord and nerve roots, often
interfering with their functions |