A 91-year-old female presented to Chonnam National University Hospital Regional Trauma Center with a lateral compression type III fracture of the pelvis. She was managed non-operatively for a week in the intensive care unit under close observation and had an emergency operation due to delayed onset of an acute obstructed direct inguinal hernia. Traumatic abdominal wall hernias are rare. However, trauma surgeons should always be aware of the possibility of such injuries because of their critical consequences.