--- title: "Cottle’s Line" description: "Understand the anatomical location and clinical relevance of Cottle's line in septal surgeries - ideal for MBBS and ENT students." source: "The ENT Resident" canonical_url: "https://www.theentresident.com/ent-notes-lectures/cottle-line" categories: ["Rhinology", "Short Questions in ENT"] video: "https://www.youtube.com/watch?v=uaS_mlWfXYs" image: "https://media.theentresident.com/og-images/cottle-line.png" --- # Cottle’s Line Understand the anatomical location and clinical relevance of Cottle's line in septal surgeries - ideal for MBBS and ENT students. Watch the full video lecture on YouTube: https://www.youtube.com/watch?v=uaS_mlWfXYs ## 🦴 Cottle's Line **Cottle’s line** is a vertical imaginary line drawn from the **nasal process of the frontal bone** and extends down to the **anterior nasal spine of the maxilla**. ### 🧠 Clinical Importance of Cottle's Line In earlier surgical practice, **Cottle’s line** was used to **divide the nasal septum** into two regions: - **Anterior to Cottle's line**: Deviations in this area were typically managed by **Septoplasty** alone. - **Posterior to Cottle's line**: Deviations could be corrected by either: - **Submucous Resection (SMR)** - **Septoplasty** > 📝 **Note:** While its usage is more historical, understanding Cottle's line is still important for conceptual clarity in ENT anatomy and surgical planning. --- **💡 Tip for Exams:** Questions on **Cottle’s test** and **Cottle’s line** are often confused. Remember, the **test** is functional (assesses nasal valve), while **Cottle’s line** is anatomical. --- ## About This Note This note on Cottle’s Line is one of the free ENT study notes published by The ENT Resident. It is free to read on the website, and it is paired with a full video lecture on YouTube. This note is categorized under [Rhinology](https://www.theentresident.com/ent-notes-lectures/category/rhinology.md) and [Short Questions in ENT](https://www.theentresident.com/ent-notes-lectures/category/short-questions-in-ent.md). Each category page lists all the free ENT notes on that topic. 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Other contact options are on the contact page: https://www.theentresident.com/contact.md ## Related ENT Notes & Lectures #### Rhinology - [Anatomy of Internal Nose](https://www.theentresident.com/ent-notes-lectures/nose-anatomy.md) - [Anatomy of Lateral Wall of Nose](https://www.theentresident.com/ent-notes-lectures/lateral-wall-of-nose-anatomy.md) - [Anatomy of Nasal Septum](https://www.theentresident.com/ent-notes-lectures/nasal-septum-anatomy.md) - [Anatomy of Paranasal Sinuses](https://www.theentresident.com/ent-notes-lectures/paranasal-sinus-anatomy.md) - [Anatomy of the External Nose](https://www.theentresident.com/ent-notes-lectures/external-nose-anatomy.md) - [Antrochoanal Polyp vs Ethmoidal Polyp](https://www.theentresident.com/ent-notes-lectures/antrochoanal-vs-ethmoidal-polyp.md) - [Atrophic Rhinitis](https://www.theentresident.com/ent-notes-lectures/atrophic-rhinitis.md) - [Cottle’s Areas](https://www.theentresident.com/ent-notes-lectures/cottle-area.md) - [Cottle's Classification of Deviated Nasal Septum](https://www.theentresident.com/ent-notes-lectures/cottle-classification-dns.md) - 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