A 9-year-old boy was brought in by ambulance to the Children's Hospital at Westmead following a motor vehicle accident. He was an improperly restrained, back seat passenger. He presented complaining of abdominal pain. On arrival, he was hemodynamically stable, with a Glasgow Coma Scale of 15. A seatbelt sign was identified across his lower abdomen. There was a tender fullness in the left flank, but it was difficult to decipher a clear mass or defect due to his high body mass index (>30). There was a laceration over his forehead extending to the hairline. The remainder of the examination was unremarkable.\nThe plain abdominal radiograph showed an unusual gas shadow in the left lower quadrant. A focused abdominal sonography for trauma was positive with free fluid in Morrison's pouch and the rectovesical pouch. The diagnosis of TAWH was made by abdominal computed tomography (CT), which revealed a large left lower lateral abdominal wall muscle defect, spanning 120 mm anteroposteriorly and 70 mm craniocaudally []. Small bowel, mesentery, and a small portion of the distal transverse colon were herniating through the defect, with associated fat stranding in the mesenteric root. Free fluid in the left subphrenic and hepatorenal space was identified.\nAn emergency trauma laparotomy was performed. He required resection of a segment of ischemic sigmoid bowel with primary anastomosis and repair of jejunal serosal tear and a large jejunal mesenteric defect. The large abdominal wall defect was closed in layers with PDS and a permacol patch secured to reinforce the defect.\nHis postoperative course was complicated by persistent fevers. An abdominal ultrasound revealed a 48 mL cutaneous collection in the left flank. Incision and drainage of the collection occurred on postoperative day 12. Intraoperatively, fecal material was identified in the left flank collection, and we proceeded to laparotomy. It was identified on laparotomy that necrosis of the psoas muscle had led to a posterior abdominal wall breakdown and herniation of the sigmoid colon anastomosis which subsequently leaked. The anastomosis was revised and the hernia repaired. He subsequently required incision, drainage, and washout of anterior and posterior wall collections 4 days later. His postoperative course was slow, and he was discharged home 33 days after the trauma. At a 4-month follow-up appointment, he was recovering well with no evidence of recurrence.
An 8-year-old Cameroonian boy with no significant past history was brought to our emergency service following a road traffic accident. On crossing a road, he was knocked down by an oncoming motorbike weighing approximately 125 kg, medium sized, and traveling at moderate speed. The motorbike fell on the boy with the handlebar catching him in the abdomen as its rider lost control. He sustained a lesion to the head with no initial loss of consciousness. On arrival, he complained of pain in his head and a swelling in the left upper quadrant of his abdomen.\nOn examination, he was conscious, with a Glasgow coma score of 15/15, blood pressure of 119/83 mmHg, pulse of 90 beats per minute, respiratory rate of 18 breaths per minute, temperature of 37.3 °C; he was 96 cm tall and weighed 26 kg. There was a 2 cm laceration in the occipital region of his head, and a swelling in his left lumbar region with mild bruising of the overlying skin (Fig. ). The swelling was reducible and disappeared in the supine position. There was no guarding and no rebound tenderness. He had normal bowel sounds on auscultation and the rest of the examination was unremarkable.\nA diagnosis of mild head injury and a handlebar hernia was made. After resuscitation, his scalp laceration was closed with a one point suture and he was programmed for surgery for the handlebar hernia the next day. A surgical exploration of the area showed a 7 cm laceration of his lateral abdominal wall (Fig. ), running from the external oblique aponeurosis through all the muscle layers to his peritoneum with loops of small bowel present in the opening. There was no blood or feces in the area immediately surrounding the lesion. Exploration of the bowel loops closest to the opening did not reveal signs of intra-abdominal injury. The abdominal wall defect was repaired in layers. The abdominal incision was closed in a standard manner. His postoperative period was uneventful. He was discharged on postoperative day 9 and scheduled 2 weeks later for a follow-up visit, but unfortunately was lost to follow-up.