Efficacy of Intensive Acupuncture Versus Sham Acupuncture in Knee Osteoarthritis: A Randomized Controlled Trial

Tu JF, Yang JW, Shi GX, Yu ZS, Li JL, Lin LL, Du YZ, Yu XG, Hu H, Liu ZS, Jia CS, Wang LQ, Zhao JJ, Wang J, Wang T, Wang Y, Wang TQ, Zhang N, Zou X, Wang Y, Shao JK, Liu CZ · Arthritis & Rheumatology · 2021 January 15

DOI https://doi.org/10.1002/art.41584

Objective

To assess the efficacy of intensive acupuncture (3 times weekly for 8 weeks) versus sham acupuncture for knee osteoarthritis (OA).

Conclusions

Among patients with knee OA, intensive EA resulted in less pain and better function at week 8, compared with SA, and these effects persisted though week 26. Intensive MA had no benefit for knee OA at week 8, although it showed benefits during follow-up.

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Insights

Intensive electroacupuncture appears to reduce pain and improve function in knee osteoarthritis patients more effectively than sham acupuncture.

In this multicenter research, individuals suffering from knee osteoarthritis were randomly selected to receive one of three treatments thrice weekly, over an eight-week period: electroacupuncture, manual acupuncture, or sham acupuncture. A double-blind model was enforced where participants, outcome assessors, and statisticians remained unaware of the specific treatment group allocations. The primary benchmark of success was the response rate, which gauged the ratio of participants who noted a minimum clinically important improvement in both pain and function by the eighth week. In the study involving 480 participants, 442 were evaluated for the effectiveness of treatment. The response rates varied among the groups at week 8: with electroacupuncture and manual acupuncture groups reporting higher rates of improvement compared to the sham acupuncture group. On continued assessment at weeks 16 and 26, these higher response rates were sustained in both the electroacupuncture and manual acupuncture groups. Among the patients, those who received intensive electroacupuncture reported less pain and better function at week 8 compared to those who received sham acupuncture, and these effects persisted through week 26. Whereas, intensive manual acupuncture did not show any significant benefits at week 8 but showed improvement in the follow-up period.