Handlebar hernia in children: two cases and review of the literature.

Localised traumatic abdominal hernias are rare. Most such hernias are due to the direct impact of the handlebars of a bicycle or motorcycle, with 20 cases reported to date in the English language literature, 12 in children. We report two new cases of handlebar hernia, in children aged 6 and 10 years. In both cases, physical examination revealed an area of contusion and bruising in the lower abdomen. However, the muscle defect was detected during the first examination in only one of the patients, and not until several days later in the other patient. Abdominal ultrasonography proved useful for diagnosis in both patients. Early surgical correction is necessary to prevent possible complications. This type of hernia should be borne in mind when evaluating children who have suffered abdominal trauma in a bicycle accident.