However, due to playing too “into”, the fierce competition in the body collision, “hang point color” is inevitable. Experts point out that knee and ankle injuries are the most common, accounting for about 1/4-1/5 of sports injuries. worryingly, many people with joint injuries, go to the hospital to take X-rays, found no fractures, they think everything is fine, they just rub some safflower oil. In fact, the composition of the joint is very complex, “parts” of many, such as ligament and cartilage damage, the X-ray can not be detected. If these ligament and cartilage wounds are not treated in a timely manner, they will become more and more serious with the body’s activities, and even cause lifelong regret. Knee and ankle injuries are the most common “Many people do not pay attention to joint sprains, swelling, thought and general contusions, soft tissue injuries are similar. The knee joint is made up of the femur, tibia, patella and fibula, the medial and lateral collateral ligaments, the anterior and posterior cruciate ligaments and the medial and lateral menisci, plus the surrounding muscles and tendons, all working together to maintain the stability of the knee joint. Among common sports injuries, knee and ankle injuries are the most common. “Clinically, at least 1/4 of the elderly have osteoarthritis caused by sports injuries or overuse when they were young. Poor cartilage repair capacity makes it easy to form bone spurs” Joint injuries are certainly better diagnosed the earlier they are. Some ligament and joint injuries are originally relatively minor and can generally recover on their own within two to three weeks through regular physical therapy, rest, and the use of medications that promote cartilage growth. However, many people do not take joint injuries seriously and continue to exercise vigorously, thinking that they will get better with activity. Unexpectedly, the ligament tears become bigger and bigger, and finally even break, while the small wound on the cartilage is only as big as a small dot at first, but if it is always subjected to wear and tear, not only will it not heal, it will also become bigger and bigger, and in the end, the only way to solve the problem is through surgery. There is no good medical treatment for cartilage injuries. Articular cartilage is not innervated, and its nutrition is extracted from the joint fluid, which is transparent and flexible. But after a cartilage injury, it is difficult to repair itself exactly as it was before. “Cartilage repair is like skin scarring, but there are differences. After the skin scars, the scars fall off on their own after a while and the skin underneath is exactly the same as before. However, cartilage is different, as the scarred part is fibrocartilage, which is much less elastic than before the injury. Because the “scarred” part of the cartilage is too hard, it will grow into bone spurs over time, leading to repeated inflammation, swelling, and fluid accumulation in the joint, and the defective part will become larger and larger.