Spine basics · 6 min read
Your Spine in Plain Language
Vertebrae, discs, nerves, joints. Four words explain most of what happens in a spine, and knowing them changes how an appointment feels.
A spine is a stack of bones called vertebrae, separated by discs that work like shock absorbers. Behind that stack runs the spinal cord, and between each pair of bones a nerve root leaves to travel out into the body. Small joints at the back of each level steer how far and in which direction you can move.
Almost every diagnosis you will hear is a description of one of those four parts. A disc that bulges past its normal border presses on a nerve root and sends symptoms down an arm or leg. A joint that wears thin aches locally and stiffens in the morning. A vertebra that loses height changes the shape of the whole column above it.
Imaging reports use longer words for the same ideas. Spondylosis is wear. Stenosis is narrowing. Radiculopathy means a nerve root is irritated. None of these terms describe how much pain you are in, and none of them predict on their own what treatment you need.
This matters because fear grows in the gap between what you are told and what you understand. When you can name the part of the spine a report is talking about, you can ask the next question: what does this mean for the way I live, and what are my choices?
This article is education, not medical advice. Bring your questions to the clinician who knows your history.