I |
Contusion or haematoma without devascularisation; partial-thickness laceration, no perforation |
Single segment haematoma; partial-thickness laceration, no perforation |
II |
Laceration <50% of circumference |
Multiple segment haematoma; laceration <50% of circumference |
III |
Laceration ≥50% of circumference without transection |
Laceration 50–75% of circumference of D2, or 50–100% of D1, D3 or D4 |
IV |
Complete transection of the small bowel |
Laceration >75% of circumference of D2, or rupture of ampulla or distal common bile duct |
V |
Transection of the small bowel with segmental tissue loss; devascularised segment |
Massive duodenopancreatic injury; devascularisation of duodenum |