Athletes such as “flying man” Liu Xiang, “vaulting” queen Cheng Fei, and handsome footballer David Beckham have all been troubled by Achilles tendon injuries, including Liu Xiang, who withdrew from the 08 Beijing Olympics because of a right Achilles tendon injury, and Cheng Fei, who withdrew from the London Olympics because of a pre-competition Achilles tendon injury. Is the Achilles tendon really as fragile as we think it is? Family doctor online interviewed Xu Hongzhang, deputy director of orthopedics at the Southern Medical University Hospital of Integrative Medicine. The Achilles tendon can withstand 780KG force several types of athletes become “the most injured” Xu Hongzhang director said, the Achilles tendon is located in the heel of the human foot, the human body mainly play running, jumping function, that is, clinically known as the heel action. Director Xu Hongzhang said that all sports involving running and jumping movements may cause Achilles tendon injury, especially athletics, gymnastics, ball games these three projects athletes are most vulnerable to Achilles tendon injury, according to clinical statistics in many sports, mobilization Achilles tendon injury gymnastics ranked first. Gymnastics often involves back handspring to receive straight backflip, turn 360 ° or gymnastics side straight body flip “and other movements may cause; followed by track and field sports, such as hurdles in long-distance running, sprinting, high jump, cycling, etc., most track and field sports may become injured; and ball, such as basketball, soccer, volleyball, etc. are required to accelerate many times fast running and jumping, where it is necessary to repeatedly The strong use of the Achilles tendon is likely to cause injury. Physiological research found that: athletes a powerful bounce, its power up to 780kg, the athletes all run so fast and jump up to a height we can not imagine, is their strong Achilles tendon in play. When the athlete in the running, jumping action, the forefoot first landing, followed by a “curved” ankle action, if the athlete ankle dorsal extension to about 20-30 degrees, and then fast running or jumping, this moment, the Achilles tendon is the most nervous, almost independent of the task of lifting the heel step running and jumping, by the pulling force is very large. The Achilles tendon is extremely vulnerable to injury. Achilles tendon injury symptoms are, when the accident can hear a “pop” sound, can be temporarily no obvious pain”, half an hour after the obvious pain. The Achilles tendon is prone to injury in athletes, students, acrobats, dancers, military personnel, where if the Achilles tendon itself first has a disease or injury, it is more likely to rupture due to another strain. In addition, people who often wear shoes that do not fit their feet are the key people who become the Achilles tendon injury, Xu Hongzhang, director of the special reminder, Achilles tendon injury is most likely to occur in cold weather, because there is no activity to open the movement, often easy to cause Achilles tendon injury.