Pilot study finds DC microcurrent linked to smaller postsurgical scars

A newly accepted pilot study in the Journal of Bodywork & Movement Therapies found that one DC microcurrent treatment was associated with an average 23.8% reduction in measured postsurgical scar depth immediately after therapy. The small, uncontrolled study used 3D ultrasound and calls for larger randomized trials to test whether the effect lasts.

Why it matters: - The study offers an objective imaging-based signal that DC microcurrent stimulation may change scar structure, not just appearance. - If confirmed in larger trials, the approach could matter for scar mobility, fascial glide and rehabilitation after surgery. - The findings are preliminary and do not show whether the measured change persists over time.

What happened: - A newly accepted pilot study in the Journal of Bodywork & Movement Therapies reported that direct-current (DC) microcurrent stimulation was associated with a statistically significant reduction in postsurgical scar depth immediately after one treatment. - The article, Effects of DC Microcurrent Stimulation on Scar Remodeling and Tissue Recovery, has been assigned DOI 10.1016/j.jbmt.2026.07.039. - The prospective, non-randomized cohort study included 17 patients with surgically induced scars. - Researchers measured scar depth before and after treatment at the same anatomical locations using a 17 MHz three-dimensional volumetric ultrasound probe.

The details: - Each participant received one DC microcurrent treatment using two Dolphin Neurostim devices. - Stimulation was applied bilaterally along the scar for 30 seconds per point at about half-inch intervals, using opposing polarities. - Treatment sessions lasted about 15 to 20 minutes. - Mean scar depth decreased by 0.447 mm, equal to an average reduction of 23.8%. - The change was statistically significant, with a 95% confidence interval of 0.264 to 0.630 mm and p<0.001. - The authors said the study is the first report, to their knowledge, of DC microcurrent therapy producing a measurable reduction in the physical size of scar cicatrix. - High-resolution ultrasound provided an objective structural measure instead of relying only on visual assessment or patient-reported change. - All participants spontaneously reported improvements in pain and range of motion. - Those pain and mobility outcomes were not formally measured and need further study. - The study citation lists the authors as Gokal R, Armstrong K, Todorsky W and Durant J. - The study was conducted in Toronto, Ontario, and the release was dated August 12, 2026. - A research paper download was offered at Download Research Paper.

Between the lines: - The result is promising, but the design limits what can be concluded. - The study had no control or placebo group, and it measured outcomes immediately after a single treatment. - The data do not show whether repeated treatment would work better or whether the observed reduction would last. - The authors argue that high-resolution ultrasound may be useful for studying structural changes in scar tissue after non-invasive interventions. - Dr. R. Gokal, the corresponding author, said the imaging approach is objective and that the findings support larger controlled studies with longer follow-up.

What’s next: - Larger randomized studies are needed to confirm the effect. - Long-term follow-up is needed to test durability. - Future research will need to determine optimal treatment frequency. - Controlled trials are also needed to test whether the observed structural changes translate into better mobility, less pain or improved function.

The bottom line: - A single DC microcurrent session was linked to a measurable immediate reduction in scar depth, but the evidence is early and not yet enough to establish lasting clinical benefit.