Effect of the Quadratus Lumborum Block Versus the Lumbar Plexus for Spiral Thighplasty Surgery

With the patient lateral decubitus position, a low-frequency curvilinear probe in the 'Shamrock' view at L2-L4. In-plane posterior-to-anterior needle advancement through the Quadratus lumborum to the interfascial plane anterior to QL and posterior to Psoas major. Inject 30 mL Bupivacaine 0.25% after negative aspiration and hydrodissection to confirm proper spread . Then the patient will be turned to the other side, and the block will be done with the same technique

Lateral decubitus, Shamrock view to identify the Psoas compartment; in-plane needle advancement to the Psoas compartment adjacent to the transverse process. Inject 30 mL of Bupivacaine 0.25% in 5 mL increments, aspirating frequently. This will be done in the same position for both sides