Quote:

Kidney rupture is similar to splenic rupture in that it is usually caused by a direct blow to the abdomen, side, or mid-to-low back which causes damage or a tear to the organ.

This is frequently seen with high-contact sports such as football, rugby, ice hockey, soccer, horseback riding, gymnastics, boxing, sledding, and skiing.

This type of injury is very rarely possible to happen spontaneously because the kidneys are well protected by the ribs, abdominal muscles, back muscles, and supporting fascia. However, the lower poles of the kidneys are inferior to the 12th ribs and are therefore more susceptible to trauma.

source: https://ksi.uconn.edu/emergency-conditions/internal-trauma/k...

English-language Scientific paper showing the use of the term ruptured kidney:
https://scholar.google.com/scholar?q=(ruptured OR lacerated)...

Urazy nerki (odbita, pęknięta, stłuczona nerka) - klasyfikacja, przyczyny
Wyróżnia się dwie grupy urazów nerek: tępe (zamknięte) i penetrujące (otwarte). Wypadki komunikacyjne stanowią główną przyczynę prawie połowy tępych urazów nerek. Mogą być one również wynikiem pobicia, upadku, wypadku związanego z uprawianiem sportów kontaktowych.
https://www.poradnikzdrowie.pl/zdrowie/uklad-moczowy/urazy-n...
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Kidney (renal) trauma is when a kidney is injured by an outside force. Your kidneys are guarded by your back muscles and rib cage. But injuries can happen as a result of blunt trauma or penetrating trauma. Blunt trauma – damage caused by impact from an object that doesn't break the skin.
https://www.urologyhealth.org/urologic-conditions/kidney-(re...
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Blunt kidney trauma

The kidney is injured in approximately 10% of all significant blunt abdominal trauma. Of those, 13% are sports-related when the kidney, followed by testicle, is most frequently involved. However, the most frequent cause by far is traffic collisions, followed by falls. The consequences are usually less severe than injuries involving other internal organs.


Blunt injuries to the kidney from helmets, shoulder pads, and knees are described in football,[1] and in soccer, martial arts, and all-terrain vehicle crashes. A literature review of peer-reviewed articles in May 2009 demonstrated that urogenital injuries are uncommon in team and individual sports, and that most of them are low-grade injuries, cycling being the most commonly associated, followed by winter sports, horse riding and contact/collision sports.[2]

A special situation has existed in the athletic participant with a single kidney. Formerly, the American Academy of Pediatrics Committee on Sports Medicine and Fitness advised against such children and adolescents from participating in contact sports. However, a study of 45,000 children with kidney injuries demonstrated no kidney loss in any contact sport. Sledding, skiing and rollerblading did, however, result in such loss.[3] Further, data from the National Athletic Trainers' Association High School Injury Surveillance Study, an observational cohort study during the 1995–1997 academic years, have been used to compare incidence rates for sport-specific injuries to specific organs. There were over 4.4 million athlete-exposures, defined as 1 athlete participating in 1 game or practice. Student athletes incurred kidney injuries most often playing football (12 injuries) or girls' soccer (2 injuries).[4]

The American Academy of Pediatrics currently recommends a "qualified yes" for participation by athletes with single kidneys in contact/collision sports although some physicians remain reluctant to acquiesce.
https://en.wikipedia.org/wiki/Blunt_kidney_trauma