The field of musculoskeletal ultrasound has rapidly advanced in the past several years. The scanning protocols in particular have become more sophisticated and more standardized. Now in its fully revised and expanded second edition, this volume is the definitive resource on musculoskeletal ultrasound for the beginning practitioner. A new, first of its kind chapter has been added on ultrasound in Sports Medicine Emergencies. This expands the book topic from using POCUS as an office tool to its use on the athletic field to assist with emergencies. This new and detailed chapter includes the acute evaluation of an eye injury, lung, Morrison's pouch, IV access, fluid status, soft tissue and DVT protocols. Conforming to an identical chapter format, all previous chapters have been expanded and updated. Images have been reformatted to larger, clearer versions in addition to probe placement images going from black and white to full color. This book is dividedinto five different sections. It begins with chapters on the upper extremity such as the hand and wrist. The next section focuses on the lower extremity such as the foot and knee. The third section is nerve based and describes brachial plexus and major peripheral nerves. The fourth section covers Sports Medicine POCUS Emergencies. The last section details specific procedures such as I&D of abscess and hydrodissection. Each chapter follows a standard structure. They open with an approach to the patient, which contains the main pathology and clinical exam. The surface anatomy and ultrasound-based anatomy are then addressed. A discussion on patient positioning and probe settings follows. Pearls, pitfalls and red flags offer tips and pointers on scanning techniques as well as pathology not to be missed. Finally, each chapter is closed out with a summary report.  Basics of Musculoskeletal Ultrasound, 2e is a must-have reference for residents, fellowship directors, fellows and primary care physicians as well as athletic trainers, physician assistants, physical therapists and ultrasound technicians. It is also an excellent resource for participants of the AMSSM MSK ultrasound courses.