People often hear several spinal words in one visit and leave unsure which one applies to them. Three terms come up most: lordosis, kyphosis and scoliosis. They describe different things, and mixing them up makes it harder to follow your own report. This explainer is for a reader in the St. Louis metro who wants to understand the vocabulary before deciding whether to get examined.
Two normal bends and one sideways curve
A healthy spine is not straight when seen from the side. The neck has a gentle forward bend called cervical lordosis. The middle back has a gentle backward bend called thoracic kyphosis. The lower back has another forward bend, lumbar lordosis. These are normal shapes that help the spine absorb load and keep the head balanced over the hips. Some people are told they have a flat back, which means the lower back has less of its usual forward curve than typical.
Scoliosis is different. It describes a side-to-side curve, usually with some twisting of the vertebrae, that shows up when the spine is viewed from the back. A normal spine looks vertical from behind. A scoliosis pattern looks like a bend toward one side, often with one shoulder or one rib cage sitting higher than the other.
So lordosis and kyphosis are about the front-to-back shape, while scoliosis is about the side-to-side shape. A person can have normal front-to-back curves and still have a sideways curve, and the reverse is also true. That is why an examiner usually checks both views.
What too much or too little can mean
When a report mentions kyphosis or lordosis, the word alone does not say whether the amount is typical. Examiners compare the bend to what is usual for age and body type, and they often look at posture in standing and in relaxed positions. A rounded upper back can come from habits, from how someone has sat for years, or from changes in the spine itself. The same word can describe very different situations, so the meaning depends on the rest of the exam.
Be careful with online pictures that show extreme examples. They are useful for recognizing a shape, but they are not a measure of your own spine.
Questions to ask about each term
Bring a written list, and ask the examiner to name each curve they are describing. Useful questions include: Which of my curves are normal, and which are being described as different from typical? Is the finding about the front-to-back bend, the side-to-side bend, or both? Is the concern about the neck, the middle back, the lower back, or a combination? Does the description come from standing observation, a bending test, or an imaging study, and what did each one show? What would change the way you describe this at a follow-up?
Write the answers next to the exact words used in your paperwork. If a term appears in your report but was not explained in the room, ask the office to point to the sentence and explain it in plain language. Ask, too, whether the term is a description of shape or a statement about cause, since those are different things.
Comparing what you are told
Two people can hear the word kyphosis in a visit and mean different things by it. One may assume it is serious, while the examiner may have meant a typical bend that is slightly more pronounced. Ask whether the finding is expected for your age and how it will be monitored. A useful habit is to note the date of each visit and the term used, so you can see whether the description stays consistent over time.
Also ask what the examiner is not concluding. Saying a spine has a sideways curve does not by itself explain the cause, and naming a bend does not predict how it will behave. Those are separate questions, and a good visit keeps them separate.
Next step
If you are deciding whether to get examined, start by writing down any spinal words you have already heard, along with the setting where you heard them. Then bring that list to your visit and ask for each word in plain terms. Understanding the vocabulary will not replace an examination, but it will help you judge whether the explanation you receive is clear enough to act on.