An abdominal injury is a type of injury that affects the abdomen, which is the area between the chest and the pelvis. A HERNIA is a common type of abdominal injury, which occurs when an organ or tissue pushes through a weakened area of muscle in the abdominal wall. Hernias can be caused by a variety of factors, including physical strain, pregnancy, and obesity. Treatment for hernias typically involves surgery to repair the weakened muscle.