Repairing a blunt injured duodenum remains a problem for surgeons because of the difficulty in early diagnosis, associated organ injuries, and frequent anastomotic site leakage. We have devised a simpler and safer procedure for transecting the ligament of Treitz and performing a debridement of the duodenum The duodenum is freed and exposed by transecting the ligament of Treitz. The injured site is then resected with appropriate debridement. The remnant stumps of the duodenum and the jejunum are anastomosed. The advantages of our method are less invasion, a more physiologic state, and no retention of food in the repaired duodenum. This technique reduces tension in the repaired wound and also reduces mortality and morbidity.