Hi Joko, You seem to have one hell of a painful problem, don't you, so I'm writing this knowing full well that I may be unmercifully ridiculed, but if it helps you at all then it will certainly be worth the ridicule for a few days.
“Crunching joints” sounds to me like arthritis and many years ago I read that uric acid in the blood forms crystals in the various joints and it is these crystals which wear away the smooth lining of the joints until the actual bones grind against each other causing the usual arthritic pain.
This may or may not be true but after a slight twinge of joint pain about 20 years ago I started taking Cider Vinegar (with water and honey) but later changed to the CV tablets as they are more convenient in every way. Apparently, liquid CV can dissolve egg shells and therefore, it is assumed that it will dissolve and remove the crystals caused by the uric acid.
I still take 3 CV tablets twice a week (normal dose can be up to 6 tabs per day) and at 81 my joints are as flexible and supple as they were in my youth.
This is not an advert for CV tablets but a sincere suggestion which could possibly help relieve your obvious pain in the future.
Cider Vinegar can take a few weeks to kick in so a bit of patience is needed.
I hope this helps in some way with your condition.