Kidney Trauma in Martial Arts: A Case Report of Kidney Contusion in Jujitsu.

The article presents the case of a 22-year-old white male presented to the emergency department complaining of left-flank pain and dark-colored urine. According to the patient, 3 days earlier he had taken some "bad falls" while practicing jujitsu and developed mild left-flank soreness. Six hours prior to presenting to the emergency department, he had attended a second jujitsu practice session during which he attempted to perform a throw on his opponent. The diagnosis of hematuria secondary to kidney contusion was made. A conservative treatment protocol was followed and the patient was discharged. The article says that students and martial artists should be taught about signs and dangers of kidney trauma and that sharp flank pain due to a fall is potentially serious.