Bell clapper deformity, a condition where your testicles aren't firmly attached to your scrotum, can also cause testicular torsion. What to do next: Testicular torsion is a medical emergency.

Males with a "bell clapper deformity" (meaning a testicle that is unanchored by ligaments to the back of the scrotum) are especially vulnerable to testicular torsion. Testicular torsion is a ...