Fatty Infiltration in Paraspinal Muscles and Lumbar Erector Spina Plane Block

All procedures were performed under ultrasound (US) guidance. The patient was monitored in the operating room and placed in the prone position under a sterile drape. A 2-6 MHz convex US probe was used during the procedure. The transverse processes of the lumbar vertebrae were visualized and then a 22 gauge spinal needle was advanced to the transverse process of the L3 vertebra. After contacting the transverse process, a total of 15 mL of drug consisting of 2 mL of methylprednisolone and 6 mL of 0.025% bupivacaine was injected into this area, and the spread of the drug in the craniocaudal area was visualized. The patients were followed up for possible complications after the procedure.