Treatment of rheumatoid arthritis with electromagnetic millimeter waves applied to acupuncture points--a randomized double blind clinical study.- "Patients from group I (n=4) reported significant pain relief and reduced joint stiffness during and after the course of therapy. Patients from group II (n=4) revealed no improvement during the study. Patients from group III reported the changes of pain and joint stiffness only after real MW sessions. After further large-scale clinical investigations MWT may become a non-invasive adjunct in therapy of patients with RA."

Study: Acupuncture Can Ease Osteoarthritis Pain From NPR

On Pins and Needles:Acupuncture for Arthritis Relief ABC News