I have the same problem in all joints. I suffer from sle. I take treatments, beside it I use apple cider vinegar. I use to take 1/2 cup of water mixed with one table spoon of apple cider vinegar after two meals,lunch and supper. It really works. You can do search for it.
I noticed a big difference in pain.

It also reduce weight if u take it regularly.

Please if u have any problem in stomach don't ever think to take apple cider vinegar.