Book excerpt: Disorders due to trauma to the head, spine, and peripheral nerves are among the most common seen by neurologists and neurosurgeons. This 42 chapter book is the comprehensive, definitive work on the subject, offering coverage on a wide range of clinical issues. The second edition features completely new sections on sports and neurologic trauma and iatrogenic trauma to complement existing comprehensive sections on head trauma, spinal trauma, plexus and peripheral nerve injuries, post-traumatic pain syndromes, environmental trauma, and posttraumatic sequelae and medicolegal aspects. Twenty-two of the first edition's chapters have been revised and updated, eight with new coauthors, and 20 new chapters have been added.