Harvard Medical School studied magnetic knee sleeves for the treatment of knee osteoarthritis. After 4 hours, test group patients reported statistically significant pain relief compared to the placebo-control group.
– Wolsko PM, Eisenberg DM, Simon LS, Davis RB, et al (2004). Division for Research and Education, Harvard Medical School, Boston, MA, USA. "Double-blind placebo-controlled trial of static magnets for the treatment of osteoarthritis of the knee: results of a pilot study." Alternative Therapies in Health and Medicine. 2004 Mar-Apr;10(2):36-43. PMID: 15055092