While deca can indeed relieve joint pain, it should not be used to treat joint issues, just like any other steroid. This is a huge misconception people have. Deca can kill the pain by reducing the inflamation, but it will not actually heal the joints. Therefore, as a result you can get your injuries even worse, because you will be stressing them even more, and since there is no pain to warn you, you may exceed the limits of your joints. Besides, deca was not created for this purpose.
It is best to use compounds that were meant for this purpose, and actually heal your joints.
Ostarine MK-2866 and N2Joint RX are such compounds. Ostarine will heal the joints, soft tissues and bones, and will do so very effectively. Besides, it will not have all the risks associated with steroids, as it does not have any side effects at all. N2Joint RX is a wonderful joint supporting supplement, that has a lot of ingredients aimed to joint support and healing, so it is an awesome stack for Ostarine. Together these compounds can do wonders for your joints, and I have personally experienced their effectiveness in this regard.