The most common sports injuries are knee and ankle injuries, which account for about 1/4-1/5 of sports injuries. worryingly, many people go to the hospital for x-rays after a joint injury and find no fractures, so they think everything is fine and rub some safflower oil on themselves. In fact, the composition of the joint is very complex, “parts” a lot, like the 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 joint components are complex, like the human knee joint consists of the femur, tibia, patella and fibula, its medial and lateral collateral ligaments, anterior and posterior cruciate ligaments and medial and lateral menisci, plus the surrounding muscles and tendons, work together to maintain the stability of the knee joint. Not long ago, a college student came in for a consultation. He told me that a month ago, he was playing basketball with some of his classmates and unexpectedly fell on the spot when he landed unsteadily, and felt a lot of pain in his knee. When he went to the school hospital for a checkup, the doctor took x-rays, but no fracture was found. After returning home, Wei used his own native method of applying vinegar and herbs to his knee. Half a month later, the redness and swelling in his knee subsided, but he couldn’t use his knee, and when he moved, he heard a clicking sound inside, and fell down when he didn’t move. Then he couldn’t stand it anymore, so he went to the hospital. I found out that his injury was definitely inside the knee joint through manual diagnosis, so I suggested an MRI and found that his meniscus was injured and his ACL was also torn. Later, a minimally invasive surgery was done to repair the meniscus and reconstruct the ligament. If the following conditions occur after your joint injury, it means that the injury is more serious and you should be careful and seek medical attention early. 1.Severe pain and rapid swelling of the joint, you can barely stand at that time, but you have difficulty walking and need to be assisted. 2.Swelling for more than a week. 3.A tearing sound can be heard in the joint at the time of injury. 4.After the swelling subsides, you can walk, and some patients can even resume their previous sports, but there is a “flash” in walking, and even repeated sprains of the joint. 5.The joint has a “don’t, stuck” feeling, sometimes accompanied by a popping sound.