Here I did the search for you.
http://www.serviceacademyforums.com/index.php?search/2299425/&q=subluxation&o=date&c[node]=20
You may be able to find posters who have gone through the process, but remember each case is different.
My DS had an eye injury. Like you, he was given a clean bill of health by his MD in March, but DoDMERB wanted to wait one full year before even considering a waiver, with of course no guarantee, even if he received another clean bill of health after that year.
It is good to know that your Orthopod will only operate if it is medically necessary. Mine waited until after my third dislocation before doing surgery.
My advice is to do what your MD says and to try to get kp2001's attention on this forum. He is the real deal--an SA grad, Flight Surgeon and, I think, had some association with DoDMERB. We shared with him everything from DS's Optho, and everything from the Optho to kp2001, who happens to be an Optho. He was very helpful to us, even though it didn't result in the outcome we wanted.
Go to this:
http://www.dtic.mil/whs/directives/corres/pdf/613003p.pdf
and about half way down page 34 you will see shoulder subluxation as a condition which does not meet "The medical standards for appointment, enlistment, or induction into the Military Services." There are waivers, but this unfortunately is your starting point.
I know it stinks, but don't give up.
Best of luck!