High +Gz induced acute inguinal herniation in an F-16 aircrew member: case report and review.

This paper describes previously unreported, acute inguinal herniation during high +Gz air combat maneuvers. The flight surgeon aircrew member involved incorrectly analyzed the etiology of the abdominal wall discomfort during and immediately after the mission. Several factors contributed to the delayed diagnosis. Surgical exploration and repair revealed larger than expected defects. An open, anterior "tension-free" repair using polypropylene mesh grafts adequately reinforced the muscular and fascial defects. Return to full flight status occurred 4 wk following surgery. Post-operatively, repeat exposures to both a high +Gz flight environment and exertionally induced increased intra-abdominal pressures were well tolerated. Minimal sequelae from the injury and repair resolved within 1 yr of the surgery and did not affect mission capability or lifestyle activities. This article includes a review of hernia repairs and their aeromedical implications, with a discussion of epidemiology, surgical techniques, risk factors, surgical complications and recovery times for return to full activity.