Hi morgan,
i am very much against any tmj surgery, even the arthrocentesis. They don't really seem to do any good (and seem to cause more irreversible damage). I am not a specialist or anything of the sort; just a long time tmj sufferer who has seen a lot of specialists and studied anything I could find about tmj for many years. So, this is just my opinion (my tmj is currently doing very well).
First - many, many people have displaced and damaged tmj discs and not all of them have any symptoms of tmj. As we get older, the discs usually deteriorate also because the jaw joints are the most used joints in the body.
But because you were in an unfortunate accident, your discs were forcefully displaced. What kinds of treatment have you been doing since the accident 13 years ago? Have you been wearing a bite splint? Physical therapy? Etc.?
Both of my discs are displaced and deteriorated. Both joints are damaged with clicking, but my tmj is not painful except for an occasional flare-up when I get stressed. I have not had any type of surgery and I thank god for that. Yes, I have to wear a bite splint (which needs adjusting or changing occasionally), I go to massage therapy semi-regularly, take prozac to keep my body relaxed (increase seratonin levels), watch my posture especially when in front of the computer, and watch my stress level very carefully.
You are right in that the odds don't seem to be in your favor. I have only heard of one or two people where arthrocentesis did any good and know of no one who was helped by a disectomy. This is from the 5 or 6 tmj support sites that I have visited over the past few years.
I know you say that the tmj specialist you saw is "great," but don't hesitate to see another dentist or two or three for more opinions. You are worth it.
God bless...
Carol