Inguinal hernia is the result of an organ, usually bowel, protruding through a weak point or tear in the thin muscular abdominal wall. Inguinal hernias can restrict blood supply to the bowel herniated through the defect, creating a medical emergency. Update Date: 10/24/2007Robert A. Cowles, MD, Assistant Professor or Surgery, Columbia University College of Physicians and Surgeons, New York, NY. Review provided by VeriMed Healthcare Network.