Persistent Post-Lumbar Surgery Pain Syndrome (PSPS) Type II is a Common Condition Encountered in Pain Units, With Limited Available Therapeutic Options. Epidural Pulsed Radiofrequency (PRF) Administered Via Catheter Has Demonstrated Greater Efficacy Compared to the Transforaminal Approach. This Rand

Pulsed radiofrequency applied via a guidable epidural catheter electrode (Cosman RCE-E401519-P), advanced through the sacral hiatus to the target lumbar or sacral root (L5 and/or S1) under fluoroscopic guidance. Parameters: 45 V, 2 Hz, 20 ms pulses, applied at a single location with continuous temperature monitoring (≤42°C). Procedure performed with Cosman C4 generator.

Epidural injection of 12 mg betamethasone diluted in 8 ml sterile saline, administered via the sacral hiatus under fluoroscopic guidance.