Wearing a knee brace can be beneficial to the knee, especially if there is damage to the knee, inflammation or laxity in the knee joint, etc. You should wear a knee brace regularly. Examples include mid to late stage periprosthetic ligament injuries and mid to late stage meniscus injuries of the knee. After the external fixation is removed, it is best to wear a knee brace that is stronger and more effective in fixing the knee so that the joint injury heals as quickly as possible and reduces the chance of the joint being damaged again. It also provides some warmth and promotes local blood circulation in the knee joint to speed up the recovery from injury. In the case of knee inflammation, especially if the inflammation is caused by cold, damp or other environmental temperature stimuli, wearing a knee brace will have many benefits and will effectively isolate the external environment. In this case, it is best to choose knee pads that are more effective in keeping the body warm to wear. In the case of joint laxity, it is best to wear a knee brace to prevent joint damage and also to train for knee strength to increase knee joint stability.