The phenomenon of pain in the external knee eye area, that is, the patient’s knee joint patellar ligament lateral pain, resulting in a number of reasons, for example, due to the knee joint part of the frequent fatigue, strain or weight-bearing activities, resulting in injury to the patellar ligament will produce this kind of pain, and the patient in the activities of the knee joint, this kind of pain significantly aggravated. In addition, if the lateral meniscus of the knee joint is injured due to frequent weight-bearing activities, or going down stairs, walking downhill, etc., the same pain phenomenon will be produced, and will be accompanied by interlocking ganton and other manifestations, you can take an MRI film of the knee joint to be able to clarify the diagnosis and degree of the disease. In the treatment of most patients need to reduce the weight-bearing activities, should be bed rest, in the lateral knee joint can be given hot compress treatment, can relieve the pain phenomenon.