This study aimed to compare the analgesia effectivity of TLIP and modified TLIP block in Posterior Lumbar Decompression and Stabilization Surgery Perioperatively.

This study aimed to compare the analgesia effectivity of TLIP and modified TLIP block in Posterior Lumbar Decompression and Stabilization Surgery. Intraoperatively, total fentanyl consumption, hemodynamic, and mean qNox Score was recorded. And Postoperatively, the patient was given the PCA, and total morphine consumption was assessed.

Inclusion Criteria:

1. Patients undergo thoracolumbar Decompression and Stabilization Surgery
2. Age between 18-65 years old
3. BMI >18,5 kg.m2, and BMI< 30 kg/m2
4. ASA 1-3
5. No contraindications for the patients to do the Block, and the patients agree and signed the informed consent before the procedure was done

Exclusion Criteria:

1. Obese patient, with BMI>30 kg.m2
2. Alergic to local anesthetics
3. Underweight patient with BMI <18,5 kg/m2"