Due to the introduction of ultrasound, the acquisition of new anatomy and\nsonoanatomy knowledge, as well as recent discoveries on the role of the fascia,\nregional anesthesia has undergone a process of \"evolution-revolution\" in the last\ndecade and now is playing a key-role in surgery and postoperative pain\nmanagement, allowing opioid-sparing or opioid-free strategies, in line with the\nERAS pathway. With the contribution of the most prominent experts in the field,\nthis book is a milestone for all professional figures involved in anesthesiology and\npain therapy, thanks to the drawings, tables, flow charts, detailed anatomical and\nsono-anatomy pictures and clinical cases included in each chapter. The volume\nincludes a chapter dedicated to the anatomy and function of fascia, a section on\nparaneuraxial block describing the paravertebral block and the ESP block in the\ncountless fields of application, a section dedicated to the anterior thoracic blocks,\na section on blocks of the anterior and posterior abdominal wall, a chapter on\npediatric wall blocks, several chapters ranging from the neck band blocks, to the\napplication and indication of the LIA and Wound infusion and an innovative chapter\non the application of RA techniques in the COVID era. Videos are available on\nhttps://USguidedwallblocks.edizioniedra.com