Even if we did know for sure, the more I read about tinnitus the more the cause seems irrelevant and it just does its own thing and is different from one person to another.
I really do mean no offense, but you do need to read more, especially because you are an ENT surgeon, whose specialty is the Ear. It really is your business, and you need to know that the causes for Tinnitus are
very relevant. Believing the opposite is what leads to shrugs, throwing the hands up in the air, and telling your patients that they just have to go home and live with it.
To give you an example, if you have otosclerosis as the cause of your T, then you roughly have a 50/50 chance of making T disappear if you undergo a stapedotomy (there is also a minute chance of making T worse). Your odds are higher if your T is in the lower frequencies. Pubmed is an awesome resource (one example
here), and I would assume as a surgeon you have access to maybe even more data.
Similarly, if you have cochlear otosclerosis and you undergo a treatment that addresses the bone remodeling process happening in your ear, you can also help your T (it also helps arrest the loss of hearing, but that's another topic). The treatments I have read studies about are Fluoride, Bisphosphonates (especially 3rd generation - there is even a patent about how to administer for best results), and bioflavonoids. All show a fraction of the patients responding well (as in, showing a significant improvement in their T symptoms) to treatment.
Here is a
diagnosis flowchart for your perusal. You can use it for your own case as well as your patients'.
It's really important for you and your colleagues to start understanding that this condition
does have a root cause (hopefully nobody disputes the existence of cause and effect logic) and that if we can find it, it can
sometimes be fixed.
I'm sorry if this sounds harsh, but as a surgeon specialized in ears, you really should know this.