Septal Deviation of 5-6mm and Nasal Septal Spur: Severe Enough to Need Septoplasty?

To better answer your question a thorough intranasal exam including a fiberoptic scope and a review of your actual sinus cat scan is necessary

Great question. A septoplasty is largely an elective procedure, thus its not really proper to suggest that anyone "needs" or must have a septoplasty. That being said, if you do not breathe well through your nose and there is some discernible obstruction of the nose by your septum then surgery is an excellent option for most patients. Simply put, if you want to breathe better through your nose, and you have a deviated septum, in my opinion there is no single treatment that will improve your breathing more than a well done septal surgery. Septopalsty is exceedingly well tolerated due to little or no pain, and nearly universally successful in improving breathing. Hope this helps. 

 The most important element of this larger picture is the overall story of persistent nasal problems despite medical treatment.  Essentially, if conservative medical treatment could resolve the problem then we wouldn't even need to discuss the septal spur findings on the CT scan.  When conservative management fails, then surgery is indicated and very commonly successful in alleviating much of the symptoms.  When surgery is deemed necessary, the septal spur and less than straight septum should be addressed.  Straightening the septum via resolving the septal spur is needed, but in of itself will not completely resolve the problem.  Nonetheless it should be addressed.On the other hand, one should not have surgery simply because a CT scan indicates that the septum has spurring.  The clinical picture has to be taken into account.