Efficacy of percutaneous needle electrolysis versus dry needling in musculoskeletal pain: A systematic review and meta-analysis.

Physical therapists have two needle-based options for musculoskeletal pain, dry needling and percutaneous needle electrolysis, and clinicians have wondered whether one offers a meaningful edge. This systematic review and meta-analysis pooled six randomized trials comparing the two approaches, using pain scales as the outcome measure. The pooled result favored percutaneous needle electrolysis, and the difference reached statistical significance, with a large effect size. But the authors specifically note this difference was not clinically significant, meaning the gap in pain scores was unlikely to matter in practice.

The evidence was rated as moderate quality, limited by variation between studies and small numbers of participants overall. The authors conclude that, despite the statistical finding, there is not yet a basis for recommending percutaneous needle electrolysis over dry needling, and they call for more high-quality comparative trials.

If you've had dry needling or a related technique called percutaneous needle electrolysis for muscle or joint pain, you might wonder if one method works better than the other. Researchers pooled results from six existing clinical trials that directly compared the two treatments for pain relief. Statistically, percutaneous needle electrolysis came out slightly ahead.

But the researchers were clear that this difference, even though it showed up in the numbers, probably wasn't large enough to feel meaningfully different to a patient in daily life. In other words, the techniques appear to perform similarly in terms of real-world benefit. The overall evidence came from a small number of trials, and the quality was rated as moderate rather than high, partly because the studies varied in how they were conducted.

Because of this, the researchers say it's too early to say one needling method is better than the other, and more well-designed studies are needed before firmer conclusions can be drawn.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

For clinicians choosing between dry needling and percutaneous needle electrolysis (PNE) for musculoskeletal pain, this review asks whether one technique has superior analgesic effect based on existing randomized trial evidence. The pooled analysis of six randomized controlled trials found a statistically significant between-group difference favoring PNE, with a large standardized mean difference (-0.41, 95% CI -0.75 to -0.08) and an overall effect of -0.74 (95% CI -1.34 to -0.14).

However, the authors explicitly characterize this difference as clinically insignificant across short, medium, and long-term follow-up, meaning the statistical signal likely does not translate into a meaningful patient-level benefit. Evidence certainty was graded moderate using GRADE, downgraded for heterogeneity in the pooled effect and small overall sample size, even though risk of bias across included trials was generally low. This combination, statistically significant but clinically insignificant, and moderate rather than high certainty, means the finding should inform expectations cautiously rather than clinical choice. The review does not establish that PNE outperforms dry needling in ways that matter to patients, nor does it clarify effects across specific musculoskeletal conditions, treatment protocols, or dosing parameters, since these details are not reported in the abstract.

The authors themselves call for more high-quality comparative trials before firmer conclusions can be drawn.