Efficacy of Adjunctive Photobiomodulation in Patellofemoral Pain Syndrome: A Systematic Review and Meta-Analysis.

Arch Rehabil Res Clin Transl · 2026 · PMC13282753 · PMID 42326590

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showed a trendno p-value reported

Across the 4 included trials, PBM, laser acupuncture, or MIRE showed a trend toward greater pain reduction compared with control conditions; however, this effect was not statistically significant (Visual Analog Scale, pooled P =.097).

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did not reach statistical significanceno p-value reported

Although the overall pooled effect did not reach statistical significance because of high heterogeneity and the limited number of studies, it is noteworthy that 2 individual trials 26 , 28 reported statistically significant pain relief in favor of the PBM group.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.