Lumbar facet joint-mediated chronic low back pain is a common cause of disability. Radiofrequency ablation (RFA) of the lumbar medial branches is an established interventional pain treatment. Different cannula designs may influence lesion geometry and clinical outcomes. This prospective randomized study aims to compare the clinical outcomes of conventional cannulas and sidekick cannulas used during lumbar medial branch radiofrequency ablation. Patients with chronic lumbar facet joint pain who meet inclusion criteria will be randomly assigned to receive RFA using either a conventional cannula or a sidekick cannula technique. The primary objective is to evaluate pain reduction following the procedure. Secondary outcomes include functional improvement and duration of pain relief during follow-up.
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Change in pain intensity (Numeric Rating Scale)
Timeframe: Baseline to 6 months