Ultrasound Guided Erector Spinae Plane Block Versus Retrolaminar Plane Block

curved probe will be placed 1-1.5 cm lateral to the target spinous process after identification of the lamina, the needle will be advanced caudally until it contacts the lamina

curved probe will be placed 2-3 cm lateral to the spine using a sagittal approach at the level of T8. After identification of erector spinae muscle and transverse processes, the needle will be inserted deeply into the erector spinae muscle.