When you turn your neck or twist your back does your spine snap, grind and ratchet like a bicycle chain stuck in mid gear? That grating noise could mean something's out of alignment.
Your spine is made up of movable bones called vertebrae, each joined perfectly together like the links of a bicycle chain. If one or more of these joints become stuck and misaligned it can slowly wreak havoc on the mechanical integrity of your entire spine. The result – pain, stiffness and premature arthritic changes. Don't neglect the noises. Abnormal grinding (crepitus) of spinal joints may indicate early degenerative joint disease.
Remember, unlike a bicycle chain, you can't replace spinal 'links' when they get damaged. Get your spine tuned up by a Chiropractor who is thoroughly trained in restoring the normal mechanics of your spine, and protect yourself from premature wear and tear.