Soreness and swelling at the tibial tuberosity is a symptom of tibial tuberosity epiphysitis, which occurs in adolescents aged 12 to 16 years who often engage in strenuous sports, more often in males than females. It is a knee disorder caused by overuse, and is characterized by pain and swelling at the tibial tuberosity. The tibial tuberosity is the attachment point of the patellar tendon, which is normally pulled by the contraction of the quadriceps muscle. Before the epiphysis has healed, if the pulling force is high, a pathologic reaction occurs at the epiphysis, which is often chronic and long-term. The pathological changes in the epiphysis are subtle changes in tissue structure strain. If the force is an acute violent pull, a tear of the tibial tuberosity can occur, resulting in pathological changes similar to an avulsion fracture. In addition, direct violence such as collisions and blows can also cause tissue damage to the epiphysis and cause morbidity. If the pain is suddenly severe, you can first apply a hot compress for a while to promote blood circulation will be more comfortable, and it is best to sit down to rest, straighten the leg and relax, if you really can not find a place to sit down, do not continue to walk, and massage yourself for a while. It is not recommended to do jumping, squatting, running and other sports, especially the first two, long distance walking is also best to avoid, do not push the legs, these are likely to increase the degree of tearing, serious to make the knee reversible, if some special circumstances need to run, you can make the knee slightly curved, using the thighs to exercise, which can reduce pain, but also exercise ligament toughness, so please be sure to improve the strength of the thighs, the above mentioned static squat will be a good choice.