Jiangcheng recently ushered in the long-awaited sunshine, the temperature has picked up, and more people are out enjoying spring and exercising. Here, we remind everyone that spring is the high incidence of some diseases, the public should pay attention to prevention. Recently, there has been a significant increase in the number of patients suffering from accidental injuries due to sports, especially among the elderly. Daddy Zhang lives near ~ mouth park, continuous sunny days, he went to the park every day with some elderly people to press the leg. At first he felt fine, so he increased the intensity, using his hands to press the knee, the next day up the knee position soreness, even the road can not walk, was sent to Hubei Zhongshan Hospital Knee Disease Center by his family for examination. After a film examination, I found that the patient had stretched his thigh muscles but injured his knee, which was more than worth the loss. As people age, their joints will become more or less worn, and pressing harder will increase the wear and tear on the joints, making them prone to degenerative arthritis. Finally, remind the elderly exercise should be based on walking, do not do a strong exercise.