In psoriatic arthritis of between phalange's joints, and cure do not help.

You had not written about what kind of remedies  had not worked for you, and today this arthritis kind of to cure with methotrexate, and with prescribing an own doctor. And very new remedies are remiceid and other blockers of FNT , but they are very expensive,ask a doctor for analogs. And hands for baths are effective too,take two tbl.sp. of leaves cowberry and ads into 0.5 l. of water, and put on an oven, and after boiling,keeping on weak fire to 20 minutes, cool, keep hands into warm remedy till cooling,and drink of cowberry s remedy onetbl.sp. for three times/day. 
And remember,that all cure of spine, joints is long for many months, take patience,and with herbs,drugs,thus they will help you.
Zoz press, December 2013,Answered Rheumatologist R.M.Balabanova,and asked by patients letter L.Uljanova.