Kocher maneuver - general and visceral surgery

The maneuver starts by incising the periduodenal peritoneum about 1 cm from the lateral duodenal margin. By gently pulling the bowel mediad the assistant puts traction on it. Lift the parietal peritoneum at the level of the mid-duodenum and incise it with scissors. Carry the dissection along the duodenum and posterior to it in the loose layer of the tela subserosa.