A soft, neutral profile portrait representing the nose
Home / Glossary / Septum
Glossary · Last reviewed 18 May 2025

Septum

The wall of cartilage and bone that divides the inside of the nose into two passages. Here is what it means, why it matters in nose surgery, and what to ask.

General health information, not medical advice, and not a substitute for a qualified doctor. Always consult a licensed professional before making any decision.
Published by Kings Hospitality LLC · 1314 E Las Olas Blvd, Fort Lauderdale, FL 33301, USA. Edited by Morten Andersen & Fredrik Filipsson. See our editorial standards & corrections policy.
In plain language

The wall down the middle.

The septum is the partition inside your nose. It separates the left and right nostrils and is made of cartilage at the front and bone further back.

The nasal septum is the structure that divides the inside of the nose into a left and a right passage. In adults it is roughly seven centimetres long and is built from flexible cartilage towards the front of the nose and thin bone towards the back. A lining covers it on each side. Together with the outer framework of the nose, the septum helps give the nose its shape and supports the tip.

When the septum sits off to one side rather than down the middle, it is called a deviated septum. This is very common; ear, nose, and throat bodies note that a large share of people have some degree of deviation, and most never notice it. A more pronounced deviation can narrow one or both passages and contribute to a blocked nose, difficulty breathing, or recurring congestion.

The septum matters in surgery on the nose. A procedure to straighten a deviated septum is called a septoplasty and is usually done for breathing rather than looks, while reshaping the outside of the nose is rhinoplasty, and the two are sometimes combined. Because septal cartilage is also a source of support and grafting material, what a surgeon does to it affects both how you breathe and how the nose holds its shape over time.

Why it matters abroad
Written and maintained by the Clinics for Kings editorial desk·Edited by Morten Andersen & Fredrik Filipsson
Fact checked against the cited sources by the Clinics for Kings editorial desk·General information, not a clinician’s review. Always consult a licensed doctor.

Breathing and shape are linked.

If you are considering nose surgery abroad, the septum is one reason to separate the cosmetic from the functional. A nose that looks different is not the same as a nose that breathes well, and work that changes the outside can affect the airway, just as straightening the septum can affect the shape. Be clear about which problem you are trying to solve, and ask how the plan treats both, since a result you can see but cannot breathe through is not a good outcome.

Ask the questions that protect function as well as appearance. Find out whether your concern is structural, how the septum will be handled, what is done to preserve support, and how revision would work if breathing or shape disappoints once you are home. Nose surgery is technically demanding and swelling can take many months to settle, so honest timelines matter. The septum is a small wall doing a large job, and a careful surgeon treats it with that respect.

Related reading

Where this comes up.

The newsletter

Subscribe to The Second Opinion.

One short, honest dispatch a week. A cost reality, a safety question, and one thing to ask before you book anything.

Email

No spam. Unsubscribe anytime.

Get Matched with a vetted clinic

Want both function and shape?

Send one brief and we route it to vetted clinics that explain how they treat the septum, breathing, and shape together, in writing. You choose, with no pressure.

Free and no obligation. We never sell your details.

How we make money: the guides are free and no clinic can pay to be named, ranked or recommended, and we never name clinics. Get Matched is an optional service that helps keep the guides free and independent of any one clinic; using it is always your choice and you are never charged. How this works.