Hernias occur when an organ or fatty tissue protrudes through a weakness in the muscle wall of the cavity it is normally contained within. The most common types of hernias are inguinal hernias (in the groin), femoral hernias (in the upper thigh), and umbilical hernias (near the belly button). Hernias can range from asymptomatic to becoming irreducible or strangulated, which is a medical emergency. Treatment options include using a truss for support or surgical hernia repair using laparoscopic or open techniques.