Kidney, bladder, ureter or urethral injuries are closed injuries of the urinary system. Of these, children with kidney injuries account for the highest rate with 60 - 90% of cases of non-surgical kidney injuries.

Kidney injuries in children account for the highest rate of urinary system injuries. Early recognition of signs of kidney injury helps treatment to be more favorable, avoiding dangerous complications.

The kidney is an organ located deep in the peritoneum, has brittle parenchyma so it is easily ruptured due to trauma, but good blood circulation and nutrition make it easy to heal and restore function. Blunt kidney injury accounts for 80-85% of kidney injuries with symptoms that need to be noted for early detection and timely treatment.