The causes of pain when standing up from squatting include posterior horn injury of the knee meniscus, knee degeneration, osteoarthritis, popliteal cyst, and ligament and joint capsule strain, etc., as follows: 1. Posterior horn injury of the knee meniscus: seen in patients with posterior horn injury of the knee meniscus, there will be pain in the leg bend when squatting. 2. Knee degeneration and osteoarthritis 3, ligament, joint capsule strain: seen in the leg bend area ligament, joint capsule strain, injury patients, will also appear squatting up the right leg bend pain. 4, popliteal cyst: seen in the popliteal cyst patients, will also appear in the squatting up the leg bend pain. After the patient appears squatting up when the leg bend pain situation, must be consulted to identify the cause, for the cause of treatment to promote pain symptoms to reduce, recovery. When the pain is obvious, you can temporarily apply non-steroidal anti-inflammatory drugs, together with blood circulation medication to reduce the pain.