Acupuncture Combined with a Rehabilitation Robot Outperforms Monotherapy in Post-Stroke Motor Recovery

Ischemic stroke remains one of the leading causes of motor disability worldwide. Even among patients undergoing endovascular therapy, only 20–30% achieve complete motor recovery, and up to 50–60% maintain limb dysfunction six months after the event. The search for therapeutic combinations that potentiate neuroplasticity in the subacute phase — the window of greatest cortical reorganization capacity — is one of the most active frontiers in contemporary neurorehabilitation.

A meta-analysis published on April 10, 2026, in Frontiers in Neurology, led by Geng Li and Quan Wang of Yunnan University of Chinese Medicine, synthesized the accumulated evidence from 20 randomized clinical trials (RCTs) with 1,594 patients to answer a central clinical question: does acupuncture combined with a rehabilitation robot outperform each modality alone in the recovery of post-ischemic-stroke hemiplegia? The answer, according to the data, is consistently affirmative across all evaluated outcomes.

Study design and methodologic rigor

The systematic review followed PRISMA guidelines and was pré-registered in PROSPERO (CRD420251155831). The authors conducted searches in eight databases — PubMed, Embase, Cochrane CENTRAL, Web of Science, and four Chinese databases (CBM, CNKI, Wan Fang, VIP) — in addition to clinical trial registries (ClinicalTrials.gov and Chinese Clinical Trial Register). RCTs were included with adults in the subacute phase of ischemic stroke (1 week to 6 months post-event) that compared acupuncture + rehabilitation robot with robot alone or conventional rehabilitation. Risk of bias was assessed by the Cochrane RoB 2.0 tool and meta-analyses were conducted in R software (version 4.5.1).

Results by outcome

Combination therapy demonstrated statistically significant superiority across all evaluated outcomes. In the Fugl-Meyer Assessment for the upper extremity (FMA-UE), the most studied component, the mean difference was 9.80 points (95% CI: 8.04–11.56) — a clinically relevant magnitude that represents real functional gain in grasping, reaching, and coordination capacity of the paretic upper limb. For the lower extremity (FMA-LE), the gain was 4.00 points (95% CI: 2.79–5.21), reflecting improvement in mobility and gait pattern.

The Modified Barthel Index, which measures independence in activities of daily living such as eating, hygiene, dressing, and transfers, showed an increment of 8.29 points (95% CI: 6.62–9.95) favoring the combination. The overall clinical efficacy rate — categorical outcome defined as the proportion of patients with functional improvement classified as moderate to excellent — showed a relative risk of 1.17 (95% CI: 1.08–1.27), indicating 17% more patients with favorable response in the combined group. Sensitivity analyses confirmed the robustness of results for FMA-UE, FMA-LE, and Barthel Index.

Safety profile

The combined intervention demonstrated a favorable safety profile. The authors did not report serious adverse events attributable to the acupuncture + robot combination. Considering that both modalities individually already have well-established safety profiles — medical acupuncture with predominantly mild and transient adverse events (local discomfort, small hematomas), and rehabilitation robots with integrated safety protocols — the absence of alarm signals in the combination is consistent with clinical expectation, but gains relevance by being confirmed in a sample of nearly 1,600 patients.