For patients with tendon pain on both sides of the knee, there are more reasons for the occurrence of the most common: the first is seen in the case of ligament strain on both sides of the knee, such as regular squatting, running and jumping, long periods of standing and long walking activities, which can easily lead to excessive force and strain on the tendons on both sides of the knee, thus causing the symptoms of tendon pain, especially at night when resting, the symptoms of pain are particularly obvious The pain is especially pronounced at night when resting and is sometimes accompanied by cramps. The second is the degeneration of the knee and osteophytes seen in the middle-aged and elderly, which can also lead to increased bone mass, stimulating the ligaments on both sides of the knee and causing tendon pain on both sides of the knee. The third is seen in patients with synovitis, which can easily lead to fluid buildup inside the joint, resulting in increased pressure inside the joint, which can also stimulate pain in the tendons on both sides of the knee.