Another large study found that people with knee osteoarthritis who had acupuncture for six months reported less pain and better function than people who received sham acupuncture or participated in an arthritis education program. But a meta-analysis published in Annals of Internal Medicine had conflicting results.
While acupuncture for osteoarthritis of the knee led to significant improvements in pain and function compared with usual care or being on a waiting list for acupuncture, it did not provide a significant advantage over a sham procedure. This suggests that some of the benefits of acupuncture might be attributed to a placebo effect. If you decide to try acupuncture, find a certified acupuncturist.