Small intestinal mesentery injury

The small intestine and its mesentery occupy a large volume, are widely distributed in the abdominal cavity, and lack strong protection. They are susceptible to damage, accounting for about a quarter of abdominal visceral injuries, ranking first in abdominal visceral injuries during wartime. Blunt injuries are caused by violently squeezing the small intestine against the lumbar vertebral body, and the contents of the intestinal canal are moved up and down rapidly, up to the flexion ligament, and down to the ileocecal valve, forming a high-pressure closed intestinal segment. The perforations are mostly in the 70cm range above and below the small intestine. Occasionally due to indirect violence (falling from a high place, sudden sudden stop during rapid travel), due to inertia, the intestinal tube vibrates violently in the abdominal cavity, and the gas and liquid in the intestinal tube are suddenly transmitted to a certain intestinal loop. The pressure in the cavity suddenly increases, causing the intestinal tube to rupture. A few are caused by excessive contraction of the abdominal muscles or iatrogenic causes.