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  • Title: Superficial Needling Acupuncture vs Sham Acupuncture for Knee Osteoarthritis: A Randomized Controlled Trial.
    Author: Lam WC, Au KY, Qin Z, Wu FM, Chong CO, Jiang F, He Y, Ng BFL, Yeung WF, Lao L, Chen H.
    Journal: Am J Med; 2021 Oct; 134(10):1286-1294.e2. PubMed ID: 34126097.
    Abstract:
    BACKGROUND: Acupuncture has been an alternative approach for pain management, but trial evidence is conflicting. METHODS: Eighty-six patients with knee osteoarthritis were randomly assigned in a 1:1 ratio from June 14, 2017, to January 20, 2019, to receive either superficial needling acupuncture treatment or sham acupuncture for 10 sessions over a 4-week treatment period, followed by a 6-week follow-up period. The primary outcome was the change of pain intensity at week 4 measured using a 100-mm visual analogue scale. Secondary outcomes included the Western Ontario and McMaster Universities Osteoarthritis Index and 36-Item Short Form Health Survey. RESULTS: At the end of the 4-week treatment period, mean changes in the visual analogue scale were -30.8 (95% confidence interval [CI], -38.2 to -23.0; p <.001) in the acupuncture group and -26.7 (95% CI, -34.4 to -18.8; P <.001) in the sham group. The difference between the acupuncture group and the sham group was -4.1 (95% CI, -14.4 to 6.2; P = 0.431). At week 10, the difference between the groups was -2.2 (95% CI, -13.1 to 8.8; P =0.699). There was no statistically significant difference in Western Ontario and McMaster Universities Osteoarthritis Index subscores (pain, stiffness, and physical function) and 36-Item Short Form Health Survey-related outcomes across groups from weeks 2 to 10. The incidence of treatment-related adverse events was 4.4% in the acupuncture group and 0.8% in the sham acupuncture group. All adverse events were classified as mild. CONCLUSION: Acupuncture for 4 weeks is not superior to non-penetrating sham acupuncture. The current study cannot confirm that superficial acupuncture has efficacy for the treatment of knee osteoarthritis.
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