the patient In the lateral decubitus position, a subcostal area and above the iliac crest in the mid-axillary line, a convex ultrasound probe is placed under sterile conditions. Using an in-plane technique, the quadratus lumborum and psoas major muscles, as well as the transverse process of the L4 vertebra, are visualized. 22G, 100 mm peripheral block needle is used to perform the block. The needle is directed between the quadratus lumborum muscle and the psoas major muscle in the subfascial plane, following hydrodissection for proper needle placement. Then, 20 mL of 0.25% bupivacaine is injected slowly, aspirating every 5 cc to ensure proper spread. The injection is performed under ultrasound guidance, visualizing the local anesthetic pushing the fascia. The same procedure will be repeated for the other side.

the patient in the supine position, a linear ultrasound probe is placed over the spina iliaca anterior superior (SIAS) line, drawn from SIAS to the umbilicus. The probe is used to visualize the abdominal wall muscles, focusing on the fascial plane between the transversus abdominis and internal oblique muscles, where a flattened football-like appearance is seen. The iliohypogastric nerve is observed more laterally, and the ilioinguinal nerve is seen more medially. Using an in-plane technique with 22G, 100 mm peripheral block needle, local anesthetic is injected near the SIAS, between the transversus abdominis and internal oblique muscles. Again, 20 mL of 0.25% bupivacaine is injected slowly, aspirating every 5 cc, and the injection is visualized under ultrasound guidance, ensuring proper fascial spread. The same procedure will be repeated for the other side.

For all patients, postoperative analgesia was planned as paracetamol 1g four times a day for the first 24 hours after surgery. Patients with Numeric Rating Scale (NRS) scores greater than 3 at 2, 4, 8, 12, and 24 hours postoperatively were administered rescue analgesia with tramadol hydrochloride at a dose of 1mg/kg.

For all patients, postoperative analgesia was planned as paracetamol 1g four times a day for the first 24 hours after surgery. Patients with Numeric Rating Scale (NRS) scores greater than 3 at 2, 4, 8, 12, and 24 hours postoperatively will receive rescue analgesia with tramadol hydrochloride at a dose of 1mg/kg. The time of the first administration of tramadol hydrochloride for each patient will be compared.

For all patients, postoperative analgesia was planned as paracetamol 1g four times a day for the first 24 hours after surgery. Patients with Numeric Rating Scale (NRS) scores greater than 3 at 2, 4, 8, 12, and 24 hours postoperatively will receive rescue analgesia with tramadol hydrochloride at a dose of 1mg/kg.The total tramadol consumption of patients within the first 24 hours will be compared.