Abstract

Lumbar facet joint syndrome (FJS) is a common cause of chronic low back pain (LBP). Radiofrequency treatments are commonly used to treat chronic LBP-related FJS that is refractory to conservative treatment, although evidence supporting this treatment is controversial. We explored the therapeutic effects of radiofrequency on FJS using a network meta-analysis (NMA). A comprehensive systematic search of multiple databases was conducted to identify randomized controlled trials (RCTs) that compared radiofrequency with other treatments (sham procedures, facet joint corticosteroid injection, and conservative treatment) for FJS. We searched PubMed, Embase, Web of Science, the Cochrane Database, and handsearching. The primary outcomes were pain score and Oswestry Disability Index (ODI). Statistical analysis included conventional pairwise meta-analysis and NMA using the frequentist method. The treatments were ranked using surface under the cumulative ranking curve (SUCRA) values. The search yielded 25 RCTs (1969 patients) and a mixed quality regarding the risk of bias, with most studies exhibiting a low risk of bias for most domains. Endoscopic neurotomy consistently ranked highest in terms of pain reduction and ODI score improvement at 1, 3, 6, and 12 months. At 1 and 6 months, endoscopic neurotomy had the highest SUCRA value for pain reduction (0.833 and 0.860, respectively), followed by medial branch thermal radiofrequency. This NMA demonstrates that endoscopic neurotomy is the most effective treatment for lumbar FJS, providing superior and sustained pain relief and functional improvement compared with other treatments. Further, high-quality RCTs are needed to confirm these findings and address the existing limitations. CRD42024524657.

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