# Cognard and Borden Classifications for Dural AVF **URL:** \ **Category:** AVM 101\ **Created:** [August 8, 2018, 10:21am UTC](https://avmsurvivors.org/t/cognard-and-borden-classifications-for-dural-avf/20868 "2018-08-08T10:21:34Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![DickD](https://avatars.discourse-cdn.com/v4/letter/d/9de0a6/32.png) [@DickD](https://avmsurvivors.org/u/DickD)\ **Post date:** [August 8, 2018, 10:21am UTC](https://avmsurvivors.org/t/cognard-and-borden-classifications-for-dural-avf/20868/1 "2018-08-08T10:21:34Z")
Classification of dural arteriovenous fistulas (DAVF) are different from regular AVMs and are not always recommended as necessary to treat. There are two main scales: Cognard and Borden: > **[Cognard classification of dural arteriovenous fistulas | Radiology Reference...](https://radiopaedia.org/articles/cognard-classification-of-dural-arteriovenous-fistulas)** > > The Cognard classification of dural arteriovenous fistulas correlates venous drainage patterns with increasingly aggressive neurological clinical course. It was first described in 1995 1 and at the time of writing (July 2016) is probably the most... ---
**Author:** ![DickD](https://avatars.discourse-cdn.com/v4/letter/d/9de0a6/32.png) [@DickD](https://avmsurvivors.org/u/DickD)\ **Post date:** [September 18, 2020, 11:04pm UTC](https://avmsurvivors.org/t/cognard-and-borden-classifications-for-dural-avf/20868/2 "2020-09-18T23:04:51Z")
> **[Borden classification of dural arteriovenous fistulas | Radiology Reference...](https://radiopaedia.org/articles/borden-classification-of-dural-arteriovenous-fistulas-1?lang=gb)** > > The Borden classification of dural arteriovenous fistulas (DAVF) groups these lesions into three types based upon the site of venous drainage and the presence or absence of cortical venous drainage. It was first proposed in 1995 1. At the time...