Our study evaluated the clinical feasibility of ultrasound-guided lateral branch radiofrequency neurotomy for sacroiliac joint (SIJ) pain after lumbosacral spinal fusion surgery (LSFS). This prospective study included a total of 46 patients who were diagnosed with SIJ pain after LSFS, did not respond to conservative treatment and therefore underwent ultrasound-guided SIJ radiofrequency neurotomy (RFN) from January 2019 to January 2022. These patients were followed up for twelve months after the procedure. Patients were assessed with the Numeric Rating Scale (NRS) and the Oswestry Disability Index (ODI) preprocedural and postprocedural for 1 month, 6 months and 12 months follow-ups. There was a significant improvement in postprocedural NRS and ODI scores (p < 0.001). Thirty-eight patients (82.6%) had a satisfactory response and good global perceived effect (GPE) after twelve months. No significant complications were observed during the 12-month follow-up. The ultrasound-guided radiofrequency device designed as a safe, easily applied and encouraging method could avoid revision surgery. It is a promising technique and has shown good results in providing intermediate pain relief. In addition to the limited series reported in the literature, future studies will add meaning to this topic by including it in routine practice.
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