Pain in the medial part of the knee, which is the location of the medial tibial condyle, is the stopping point of the medial collateral ligament of the knee at the medial tibial condyle, and there are two common causes of pain in this location. 1, it may be caused by local sports injuries, commonly seen in people who do semi-flexion of the knee for a long time, or jumping sports, such as playing basketball, badminton, soccer, etc. 2, it may be caused by the degeneration of the medial collateral ligament, which is often strongly contracted, resulting in a small local laceration at the stopping point. The medial collateral ligament is often strongly contracted, resulting in small local lacerations at the stop, which can lead to chronic aseptic inflammation and pain over time. 2. It may be a degenerative change of the knee joint. It is common in the middle-aged and elderly people, or people who have been doing heavy physical labor on the lower extremities for a long time, usually have very obvious pressure pain in this area, and the x-ray of the knee joint is usually seen to have the performance of osteophytes.