I have read your description and am sorry to hear that you have been through such an ordeal. It does not however appear as if there has been a failure to diagnose your condition. Your doctor seems to be aware of it and you are receiving treatment. You might feel that there has a departure from accepted medical standards or practice in the improper treatment of your condition. RA is a degenerative disease which typically worsens over time. In extreme cases, the patient needs surgery to address the effects of the stenosis It does not sound as if you have progressed to that point. And if indeed you are, the issue is whether the delay in receiving treatment was a substantial factor in reaching that point. It might well be that you would have needed surgery anyway. That is for your doctor to determine in consultation with you. the patient.
You should ask your new doctor whether the treatment that you have been receiving has been proper, timely and adequate. It is very difficult to determine whether there has been such a departure without the complete medical records. Any attorney reviewing your case would want to see them. Remember, New York has a 2 1/2 year statute of limitations on medical malpractice claims. That time can be tolled, or extended, if you continuously see the same doctor for the same condition. We wish you the best of luck in the pursuit of your claim.