I wanted to update my white vinegar post for arthritic joints. My suggestion is just to spray your fingers or hands before bed and leave on overnight. Try to bend or crack joints the following day. I'm not sure but for me, joints that were fused are now cracking and although swollen are starting to lay down. Again I have no medical background but from what I'm seeing and the sounds I hear on bending and massaging is that it's breaking up calcification in these fused joints.
For arthritic fingers and joints
I got a mini plastic spray bottle and began spraying, and massaging with plain white vinegar 2 days ago. Within 2 days I began to be able to start cracking them and 2 that were sitting up seemed a bit better. However what was most remarkable, was 1 of them when I tried to bend sounded like crackling calcification. I kept doing it because I couldn't believe it. I continued hearing it. It's swollen however it's trying to sit back down. It's the middle finger and baby finger.