When talking about a sport, we not only pay attention to its exercise effect, but also often talk about whether it is easy to hurt our knees. As all athletes know, knee joint and shoulder joint are very fragile joints, because they tend to bear more weight and have a relatively large range of motion. Unlike acetabulum, which has enough ligaments and strong muscles, it has high stability. The knee joint participates in almost all lower limb movements, and the blood supply of meniscus is poor, so it is not easy to recover after injury. Therefore, everyone pays special attention to the protection of the knee joint when exercising. However, in addition to the knee joint, there is another kind of sports injury that is particularly prone to occur during running, that is, Achilles tendinitis. The Achilles tendon here mainly refers to the muscle groups with the calf above the heel, such as gastrocnemius and soleus. As we all know, Liu Xiang has to give up his whole sports career because of an achilles tendon injury.

In running, we always emphasize the need to wear proper running shoes, not only because proper running shoes can reduce the cushioning of knees and ankles, but also have a certain protective effect on calf muscles and achilles tendon. In addition to running, basketball, football and other sports are also particularly easy to damage the achilles tendon, because in these sports, it is often necessary to constantly take off and stop. Not giving the body enough time to adapt, suddenly starting a lot of exercise, or directly starting violent jumping and other activities that require severe contraction of calf muscles may lead to tendon injury. Finally, people with flat feet are more likely to suffer from achilles tendinitis, because flat feet will increase the tension on the achilles tendon and are more likely to be injured.

Achilles tendinitis is mostly aseptic inflammation, and the acute stage is mainly characterized by redness, swelling and heat pain. Especially at the beginning, the pain above the heel will be aggravated, and the affected area will be stiff, tender and swollen. If the acute phase is not treated properly, it is easy to turn into chronic phase. Chronic tenosynovitis is characterized by long-term pain and stiffness, but the pain in chronic stage is lighter than that in acute stage.

Once the achilles tendon hurts, it must be treated in time. Long-term tendinitis will lead to the degeneration of achilles tendon, which may break under the impact of some sports. Once the tendon is completely broken, it is difficult to repair it. Even through surgical treatment, it is difficult to completely restore motor function, and there is a high probability that it will leave lifelong sequelae. Therefore, the injury of achilles tendon must be paid enough attention. Most achilles tendinitis can be found by X-ray examination, and some patients need further examination to fully evaluate their condition. Timely treatment is the wisest choice.