Testicular torsion occurs when the testicle, normally attached to the scrotum by a small ligament at its base, becomes loose. The testicle can then twist on itself, cutting off its flow of blood. Testicular torsion is considered an emergency. Surgery is usually required, and it should be performed within about 5 hours from the onset of symptoms to save the testicle.
Update Date 8/31/2015
Updated by: Jennifer Sobol, DO, urologist at the Michigan Institute of Urology, West Bloomfield, MI. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.