Chronic nonspecific low back pain is the leading cause of disability worldwide and represents a therapeutic challenge of large magnitude for health systems in every country. Published in the journal Heliyon (Elsevier) in 2025, the largest network meta-analysis (NMA) ever conducted specifically on acupuncture modalities for this condition pooled 63 randomized clinical trials with 9,454 participants and compared 22 therapeutic variants — from conventional acupuncture to auricular acupuncture, electroacupuncture, and combined protocols — within a single Bayesian model of indirect evidence.
The analysis identified that individualized acupuncture (tailored to each patient’s clinical profile) produced a reduction of −11 mm on the visual analog scale (VAS) of pain compared with control — a difference that exceeds the threshold of minimal clinically important difference (MCID) established for low back pain. Among the modalities evaluated, auricular acupuncture stood out as the most effective option for pain reduction, while the combination of local acupuncture with electroacupuncture (LP+EA) associated with core stabilization exercises led the rankings for function and physical capacity.
STUDY DATA
Methodology: why NMA is the gold standard here
The network meta-analysis (NMA) allows simultaneous comparison of multiple interventions — even those that have not been compared directly in individual trials — by integrating direct and indirect evidence within a single hierarchical statistical model. For chronic low back pain, where dozens of acupuncture variants are used in clinical practice, this approach is methodologically superior to traditional pairwise meta-analysis. The researchers searched systematically in PubMed, Embase, Cochrane, and Chinese databases, including only RCTs of sufficient quality with pain and/or function outcomes reported in standardized form.
Outcome rankings: pain versus function
One of the most relevant findings of the study is the distinction between the modalities most effective for pain and for function. For pain relief, auricular acupuncture emerged as the approach with the best ranking on SUCRA (surface under the cumulative ranking curve). Auricular acupuncture acts through stimulation of auricular zones corresponding to the lumbar spine, activating central pain modulation pathways via the vagus nerve and limbic connections. This modality is especially relevant for patients seeking complementary treatment between sessions of peripheral acupuncture or as a self-administered option using seeds or beads.
For function — assessed using scores such as the Roland-Morris Disability Questionnaire or the Oswestry Disability Index — the leading approach was the combination of local acupuncture with electroacupuncture and core stabilization exercises (LP+EA). This integrated protocol leverages both the neurophysiologic effect of electrical stimulation on paravertebral muscle fibers and active strengthening of trunk stabilizing muscles, creating a synergy that acupuncture alone does not achieve at the same magnitude for functional outcomes.
Frequently Asked Questions
This NMA with 22 modalities showed that individualized acupuncture exceeds the threshold of clinically significant pain improvement. For pain alone, auricular acupuncture leads the SUCRA rankings. For functional recovery, the combination of local acupuncture with electroacupuncture and core stabilization exercises produced the best results. The choice should consider the clinical profile of each patient.
Yes. The trials included in the NMA recruited patients with chronic nonspecific low back pain, many with a history of prior treatments. Individualized acupuncture exceeded the threshold of clinically significant improvement even in this population. This suggests that acupuncture has value as a therapeutic option at different stages of chronic low back pain management.
The NMA did not detail per-modality session protocols, but the consolidated literature for chronic low back pain suggests cycles of 8 to 12 sessions as a minimum to assess therapeutic response. For patients with good response, monthly maintenance sessions can be considered. Auricular acupuncture with seeds may be prescribed as an inter-session protocol to extend the period of effect.
Fonte Original
Heliyon (Elsevier)(em inglês)Founded in 1989 by physicians trained at the University of São Paulo (USP) and specialized in China, CEIMEC is a Brazilian national reference in the teaching and practice of medical acupuncture. With more than 3,000 physicians trained over 35 years, it collaborates with HC-FMUSP and is recognized by the Brazilian Medical College of Acupuncture (CMBA/AMB).