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Organ Injury Scaling

Grade Injury Description AIS-90
I Contusion Microscopic or gross haematuria, urological studies normal 2
Haematoma Subcapsular, nonexapnding without parenchymal laceration 2
II Haematoma Nonexpanding perirenal haematoma confined to renal retroperitoneum 2
Laceration <1cm parenchymal depth of renal cortex without urinary extravasation 2
III Laceration >1cm depth of renal cortex, without collecting system rupture or urinary extravasation 3
IV Laceration Parenchymal laceration extending through the renal cortex, medulla and collecting system 4
Vascular Main renal artery or vein injury with contained haemorrhage 5
V Laceration Completely shattered kidney 5
Vascular Avulsion of renal hilum which devascularizes kidney 5
Advance one grade for multiple injuries to same organ.