Traumatic bicycle handlebar hernia in children: a systematic review.

INTRODUCTION: This is a systematic review of existing literature on the diagnostic modalities and treatment of traumatic abdominal wall hernia caused by bicycle handlebar injury in children. 
METHODS: A systematic literature search was conducted covering incidents involving children below 17 years of age. Data were extracted regarding gender, age, diagnostic modality, timing of surgery, location of hernia, associated injuries, management and recurrence of hernia.
 RESULTS: A total of 62 cases of handlebar hernia were included in the systematic review. CT scan was the most frequently used final diagnostic modality (52%) followed by 
ultrasonography (13%), explorative laparotomy (5%) and diagnostic laparoscopy (5%). Coexisting intraabdominal injuries were present in 57% of all hernias located in the upper abdomen. Open surgical repair was the preferred treatment of choice (85%). Laparoscopic suturing was performed in one study. Six cases of handlebar hernia were treated conservatively. No cases of recurrence of hernia were reported in any of the cases. 
CONCLUSIONS: Traumatic abdominal wall hernia can be visualized by ultrasonography, but CT scan is often used as the final diagnostic modality because of the risk of associated intra-abdominal injuries. Open surgical repair in layers or laparoscopic suturing during diagnostic laparoscopy may be appropriate in managing traumatic abdominal wall hernias in children. Non-surgical management has been described, but available data do not support a general recommendation for a non-surgical approach.