Traumatic abdominal wall hernias may result from both penetrating and blunt trauma. In blunt trauma, the injury pattern is usually a shearing force over the abdomen in different directions, distributed over underlying bony prominences such as the pelvic rim. The use of a lap-belt restraint in an obese person may contribute to this finding. The result may be a rectus hematoma, a full-thickness tear of the anterior or lateral abdominal wall, or a total disruption of the abdominal wall with evisceration of the intestines. CT scanning may help to identify clinically unrecognized cases.
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