Ultrasound-guided nerve blocks of the trunk and abdominal wall
Due to the introduction of ultrasound, the acquisition of new anatomy and sonoanatomy knowledge, as well as recent discoveries on the role of the fascia, regional anesthesia has undergone a process of "evolution-revolution" in the last decade and now is playing a key-role in surgery and postoperative pain management, allowing opioid-sparing or opioid-free strategies, in line with the ERAS pathway.