An exceptional cause of intestinal obstruction is reported. Ileus is an 8-yr-old boy persisted for 9 days after successful reduction of an axial dislocation of L1 on L2. At laparotomy, a paraduodenal hernia with bowel strangulated between the bodies of L1 and L2 was discovered. The successful treatment consisted of cleaning out the intervertebral space, resection of the necrotic bowel with anastomosis, antibiotic therapy, and a plaster jacket worn for 3 mo.