It sounds like you have seen a lot of doctors and tried different treatments without much relief. Have you thought about seeking help at a teaching hospital or major health facility like Mayo Clinic? Just wondering if it might give you other options. Did any of the doctors mention nerves being compressed as part of the problem? There is another discussion that some members have found helpful for various conditions dealing with nerve compression.

--- Myofascial Release Therapy (MFR) for treating compression and pain: https://connect.mayoclinic.org/discussion/myofascial-release-therapy-mfr-for-treating-compression-and-pain/