Figure 1. Ultrasound-guided anterior QL block. (A) Shamrock sign. (B) A local anesthetic was injected between the QL and the psoas major. QL, quadratus Lumborum; PM, psoas major; ES, erector spinae; TP, transverse process; LA, Local anesthetic

From

Ultrasound-guided Anterior Quadratus Lumborum Block for Perioperative Analgesia in Allograft Orthotopic Liver Transplantation: 4 Case Reports

Yongping Liu, Siyou Tan, Wenyan Chen, Lai Wei

American Journal of Medical Case Reports. 2021, 9(12), 678-682 doi:10.12691/ajmcr-9-12-4