There has been an increase in litigation due to a failure of recognition of anal sphincter tears and inappropriate management. This book clarifies and graphically demonstrates perineal anatomy and explains the pathophysiology of anal incontinence as well as applied pharmacology. It also institutes the new recommended classification of perineal tears and describes the various anal sphincter repair techniques. The emphasis is placed on the correct post-operative management, management of a subsequent pregnancy following previous anal sphincter injury, and prevention of anal sphincter tears as an important issue that has not been given due consideration previously. The authors also focus on medical/legal implications in order to introduce safe medical practice.