Xiaobo has always been lively and cheerful, and likes to bounce in his spare time. One day, he went into a nearby discotheque and bounced around wildly with the powerful rhythm of the music. As he bounced, Xiaobo suddenly felt a sharp pain in his right thigh and testicles. At first he thought he would be fine after a break, but after a break, the pain did not ease in the slightest, but became more and more severe, and even a little nausea and desire to vomit. When his friends saw that he was pale and in pain, they immediately sent him to the hospital. After a detailed examination, the doctor found that his right testicle was higher than the left, and found that there were blue spots on the scrotal skin, combined with the fact that he had the trigger for strenuous exercise, and finally came up with a diagnosis: Xiaobo was suffering from acute testicular torsion, and had to be operated on immediately. The dancers were shocked to hear that how could testicular torsion occur in a bouncing disco? It turns out that when a person is embryonic, the male testicles are in the same position as the kidneys, and as the embryo grows and develops, the testicles gradually increase in size and finally enter the scrotum. Although the testicle enters the scrotum, its “roots” remain above, mainly the arteries, veins and vas deferens, medically known as the spermatic cord. In fact, the testicle is still suspended by the spermatic cord, and during normal development, the testicle is tightly bound to the tissues in the scrotum and does not rotate. However, if during development, the testicular sheath is too high at the stop of the spermatic cord or the tether is too long, the testicle is too mobile or the testicle is completely free within the sheath, then under certain conditions, the testicle and spermatic cord can twist more than 360 degrees, which is called testicular torsion, also known as spermatic cord torsion. Testicular torsion is a urological emergency with a rapid onset and severe pain in the affected testicle and scrotum. The pain is initially confined to the scrotum, but later progresses to the lower abdomen and perineum, accompanied by pallor, cold sweats, vomiting, nausea or fever, and redness, swelling and pressure pain in the pubic area. As the spermatic cord is twisted, the blood vessels in the spermatic cord are blocked and the testes lack blood supply. If left untreated, the testes will undergo ischemic necrosis, darken and gradually atrophy to the point of loss of function. Examination can reveal swollen testicles in a transverse position with obvious tenderness, and elevation of the scrotum can reduce the pain. If the child is small and will not complain, the diagnosis is often more difficult, and generally the child will have unexplained anorexia and restlessness, and the condition generally develops faster, and sometimes treatment is often delayed because the diagnosis is not established. If the testicle is not reset in time, it can also cause serious consequences such as testicular necrosis. Once diagnosed, testicular torsion requires immediate surgery, otherwise it can lead to necrosis of the distal testicle. Surgery can not only treat the torsioned testicle, but also prevent the development of the healthy side of the testicle. Recent medical research has found that necrotic testes can pass through the blood-testis barrier in the body and form anti-sperm antibodies, which can easily affect the function of the opposite testis. Therefore, the torsioned testicle with no hope of survival should be removed in time. In addition, in addition to treating the torsioned testicle during surgery, the testicle on the healthy side is usually fixed as well, because the chances of morbidity are often similar on both sides, and if one side develops, the other side will also develop sooner or later. Testicular torsion is not very rare, but most people, including some medical professionals, are under-aware of the condition, so the misdiagnosis rate is extremely high. It is often misdiagnosed as acute orchitis, acute epididymitis, or incarcerated hernia, and the treatment is delayed. Testicular torsion occurs in young adults and adolescent men, and is mainly triggered by strenuous exercise or rough sex. It also occurs during sleep or just after waking up. This is due to the vagus nerve excitement during sleep and the enhanced contraction of the levator muscle with the erection of the penis, causing torsion. If there is overgrown spermatic cord, testicular dysplasia, incomplete testicular descent, excessive testicular activity, or tension in the levator muscle, which is manifested by frequent upward elevation of the testicles, you should usually avoid too long and strenuous activities, because this will make the levator muscle cramp and lead to testicular torsion. In addition, in the prevention should also pay attention to, adolescence do not have early intercourse, newlyweds do not have sex when fatigue and excessive sex, these are risk factors that can trigger testicular torsion.