I have ra and oa i am experiencing numbness in my left hand from my elbow to my finger tips is ra or oa the cause of this?

Variable: Not usually a part of oa and ra.

Depending upon the: Distribution of the tingling it may mean one or more nerves are being compressed. The median nerve gives sensations of thumb index middle and part of the ring finger the ulnar nerve to the little and part of the ring finger and the radial nerve to the back of the wrist and hands on the thumb side sometimes combinations of these mean there is a more proximal sites such as the neck or the shoulder