Li H, et al. - In postoperative analgesia for abdominal surgery, although a subcostal quadratus lumborum (QL) block is used, it remains challenging to precisely put the needle tip into the target fascia compartment. Researchers herein described a modified approach to aid the subcostal QL block. They enrolled 24 patients scheduled for laparoscopic renal surgery. Preoperative placement of the modified QL block was done. The parasagittal scan was performed by placing the transducer just laterally to the tip of L1 transverse process. Insertion of the needle was done in-plane and it was advanced toward the target compartment between the QL muscle and the anterior thoracolumbar fascia and just below the lateral arcuate ligament. If the sonogram shows the cranial spread of saline via the posterior pathway of lateral arcuate ligament, injection of 20 mL of 0.5% ropivacaine was done slowly. Then, they performed paramedian transverse scanning at the level of T12-L1 to observe the injectate diffusion. Test of the dermatomal coverage of sensory block was done at 5 min and 10 min after LA injections. Overall 23 (95.8%) patients received the successful block. Findings suggest the modified subcostal QL block as beneficial in terms of clear sonoanatomy, rapid onset time, and consistent dermatomal coverage as well as a novel option for postoperative analgesia of abdominal surgery.