Researchers from Peninsula Medical School at the Universities of Exeter and Plymouth in the UK reviewed 13 studies and found 5 with more than 1300 patients with the knee pain.

According to the analysis acupuncture was superior to sham acupuncture (pretend acupuncture) for both pain and function. The effects were also significant at long-term follow-up.

This systematic review of acupuncture for knee pain was published in the Journal Rheumatology (Oxford). 2007 Mar;46(3):384-90.