Evaluation of the Postoperative Analgesic Efficacy of the Quadroiliac Plane (QIP) Block in Femur Fracture Surgery

The Quadroiliac Plane (QIP) block is a novel ultrasound-guided fascial plane block. In this study, it will be performed postoperatively under spinal anesthesia in the prone position. A low-frequency convex transducer will be used to visualize the quadratus lumborum muscle at its attachment to the inner iliac crest. Using an in-plane technique with a 22G x 100 mm needle, 40 mL of 0.25% bupivacaine will be injected into the fascial plane beneath the quadratus lumborum muscle. The block will be performed unilaterally on the surgical side. The aim is to provide postoperative analgesia in patients undergoing femur fracture surgery.