The track and field competition of the 2008 Beijing Olympic Games took place at the "Bird''s Nest" stadium, and Chinese flying Liu Xiang played in the sixth group. During the warm-up before the game, Liu Xiang lay on the ground as he crossed the fourth column during the second set. He seemed to have a problem with his right foot and limped back to the rest place. It is reported that the old injury of Liu Xiang''s heel caused the problem, and pain appeared again in this place during today''s warm-up. At the beginning of the official game, Liu Xiang had to regretfully retire after the first shot due to injury.

　　This eye-opening scene, The audience and the audience in front of the TV were caught off guard-the original foot injury was so fierce that the Olympic champion lost the opportunity to defend his title. It is understood that Liu Xiang''s foot injury has been for 7 years and is an old injury. After Liu Xiang entered the Olympic Village on the 16th, he went to the hospital for an expert consultation and did MRI. He found inflammation in the root of his right Achilles tendon. Liu Xiang''s foot bones are different from normal people and are more prominent than others, so at first it was broken, and later became a cocoon, but now it is inflammation.

　　 Achilles tendon is a large tendon located behind the ankle joint. It connects the muscle group behind the calf to the calcaneus. It is an indispensable tool for human walking, running, climbing and other sports. With inflammation, the Achilles tendon will become brittle, it will hurt when it is hard to run, and it may break, which will make it more troublesome.

　　Generally, the inflammation of the Achilles tendon is divided into bacterial and sterile, but due to the special reason that the blood supply of the Achilles tendon is relatively insufficient, the healing time is often slow.

　　 Achilles tendinitis is very common clinically. Achilles tendinitis will occur in people who like to run, climb mountains and other heavy exercise. If there is local skin damage, there will be bacteria retention, mostly low toxicity bacteria. Chang Qian does not heal, causing adverse effects. For aseptic Achilles tendinitis, rest, ice compress, medication, and shoe shape adjustment can be taken, and attention should be paid to avoid repeated hormone closure treatment to prevent spontaneous rupture of Achilles tendon.