Stroke is the leading cause of acquired neurologic disability in the adult world, leaving most survivors with some degree of motor, sensory, cognitive, or functional impairment. Although medical acupuncture is increasingly integrated into post-stroke rehabilitation, the question of which modality is most effective for each specific outcome remained unanswered in the literature. A new network meta-analysis published in Frontiers in Neurologydirectly answers this question: by bringing together 120 randomized clinical trials and 15,848 patients, the study demonstrates that different acupuncture techniques have distinct advantages according to the clinical outcome evaluated.
DIMENSIONS OF THE META-ANALYSIS
How the study was conducted
The research team, led by Zixin Teng and Zhi Gao, performed systematic searches in multiple international and Chinese databases. The analysis applied Bayesian network meta-analysis methodology with SUCRA curves (Surface Under the Cumulative Ranking Curve), which assigns each modality a score from 0 to 100% indicating the probability of being the best intervention for that outcome. The five primary outcomes were: NIHSS (neurologic severity), Barthel Index (functional independence), mRS (modified Rankin scale of disability), MoCA (cognition), and MMSE (mental state).
Results: each technique has its domain of excellence
The central finding of this meta-analysis is that there is no universally superior acupuncture technique — superiority depends on the clinical outcome to be optimized. For global neurologic recovery, measured by NIHSS, electroacupuncture obtained a SUCRA of 95.7%, which positions it as the modality with the highest probability of being the best intervention. For functional disability (mRS scale), warm-needle moxibustion reached SUCRA of 100% — the maximum possible value. For cognition (MoCA/MMSE), scalp acupuncture demonstrated advantage with SUCRA of 86.1%.
BEST TECHNIQUE BY OUTCOME (SUCRA)
For the Barthel Index, which measures independence in activities of daily living, all evaluated acupuncture modalities surpassed isolated usual treatment, confirming that medical acupuncture contributes consistently to functional rehabilitation regardless of the specific technique employed. This consistency of favorable effect across all outcomes reinforces the biological plausibility of the intervention, while the magnitude of benefit varies according to the chosen technique.
Implications for rehabilitation
The results support a differentiated protocol approach in post-stroke rehabilitation with medical acupuncture. A patient with severe neurologic déficit (high NIHSS) may benefit primarily from electroacupuncture in the first months after the event. The patient with predominant cognitive impairment may have greater gain with scalp acupuncture protocols. The patient with high functional disability (mRS 3-4) may be the ideal candidate for warm-needle moxibustion, a technique that combines thermal and mechanical stimulation at strengthening acupoints such as ST-36 and CV-4.
Study limitations
The broad evidence base is a strength of this meta-analysis, but it also brings heterogeneity: the 120 RCTs included varied regarding time since stroke, type (ischemic or hemorrhagic), number of sessions, and point protocols used. Most studies were conducted in China, which may limit direct generalization to populations with different clinical profiles and conventional rehabilitation approaches. The authors emphasize the need for international multicenter trials with standardized protocols to consolidate the identified hierarchies.
Frequently Asked Questions
Yes. The previously published 70-RCT meta-analysis in Frontiers in Neurology focused exclusively on post-stroke cognitive impairment. This new analysis of 120 RCTs covers all aspects of recovery — neurologic, functional, and cognitive — allowing comparison of different acupuncture modalities on each outcome simultaneously.
It is a modality that uses specific zones of the scalp corresponding to cortical projections — such as the motor zone (parallel to the central sulcus) and the sensory zone. Stimulation of these regions can modulate cortical and subcortical neuronal activity, with particular application in post-stroke motor and cognitive deficits.
It is a technique that combines conventional acupuncture with the application of heat by burning moxa (mugwort) attached to the base of the already inserted needle. The heat radiates along the needle to the point, generating local thermal stimulus. It is widely used in tonification and strengthening protocols in traditional Chinese medicine, with applications in functional rehabilitation.
No. The meta-analysis evaluated acupuncture as a complementary intervention to standard care, which includes physical therapy, speech therapy, and occupational therapy. The ideal approach is multimodal, with the physician coordinating the therapeutic protocol according to the déficit profile and the rehabilitation phase of each patient.
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).
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