Dear Photonate,
How awful that you suffered this injury and that the suffering just keeps going on. Heartbreaking! I wish I had an answer to the basic question you pose since it is so important to you health, but sadly I don't. What did your physician say when you told him of how you are obtaining relief? Wish I could help since you are in such distress. Hopefully others here will have more helpful words for you than my poor words. My heart goes out to you!
Sincerely yours, Yao Wen