The septum is the key structural support piece of the nose. It is composed of cartilage in the front and bone in the back. It is VERY common for humans to have a deviated septum, however, this is not always clinically significant. Some patients have major deviations with very little obstruction, while other patients have minor deviations that cause a great degree of obstruction. The nasal septum can be deviated in many different ways, each requiring different techniques to correct.