This clinically based, comprehensive textbook provides a detailed description of the most useful nerve blocks in ultrasound guided regional anesthesia. Four sections cover Basic Principles (including an appendix, “What Block for What Surgery?), Upper Limb Blocks, Lower Limb Blocks, and Trunk and Spine Blocks. The initial chapter provides a review of ultrasound physics that allows the practitioner to understand how to optimize the ultrasound machine to produce the best ultrasound images possible. This foundation, along with the clinical tips and step-by-step techniques for in-plane and out-of-plane needle guidance, make this instructive text useful for practitioners at all levels. The first chapter also includes seven Keys to Ultrasound Success and concludes with a clinical summary of which blocks to perform for specific surgeries or trauma situations. The specific blocks covered in the remaining chapters range from the classic femoral, interscalene, popliteal sciatic, and axillary blocks to more novel blocks such as the adductor canal, selective suprascapular, quadratus lumborum, and PECS blocks. Each block description includes a review of clinical anatomy, indications, positioning, and a step-by-step approach to ultrasound imaging and needle insertion. Ultrasound images are provided in both an unedited, clean version and a companion version that is clearly labeled, allowing the reader to compare the images side by side. Throughout the book, comprehensive photographs of ultrasound images, cadaver dissections, and patient positioning are provided, with vibrant, colorful annotations that significantly add to the clarity of instruction provided.