The knee joint is the most important joint that supports the body’s daily activities, but it is also the most delicate joint. Why do I say that? Because the most common patients I see in the hospital are those with knee injuries. Don’t underestimate the damage to the knee joint from everyday life, as walking up the stairs, lifting a heavy object, or playing a sport can cause discomfort in the knee area. In the face of this situation, some people struggle to go to the hospital for examination, while others simply ignore it, thinking that there will be no major problems. In order to solve this situation, the small beauty here today to introduce some of their own home can check the knee injury methods, so that in the event of knee discomfort you can simply check yourself, and then decide whether to go to the hospital for further treatment. A, knee discomfort so check the knee pain, observe the pain and the weather has no correlation. If your knee hurts in rainy weather and your knee is fine in sunny weather, consider whether you have rheumatoid arthritis. For knee pain, determine if there is a correlation between the pain and exercise. If you have knee pain after exercise, you will first need to rest and then, depending on the level of knee pain after rest, decide whether to reduce the intensity of the exercise or go to the hospital. Occasional ringing when moving the knee, no discomfort in the knee when walking on a flat surface, and increased knee pain after squatting and standing up, going up and down stairs, or walking a long distance. If you have the above symptoms, you need to lie down on the bed during the examination, have another person hold the left hand on the knee, hold the ankle with the right hand, flex the knee joint and then straighten it, and listen for any sound to be made. If a sound is made, it may be chondromalacia of the patella (knee). Patients with mild symptoms can temporarily go to the hospital, pay attention to avoid direct impact on the patella and reduce patellofemoral friction activities, such as going up and down the stairs, cycling and other activities, symptoms can be expected to reduce. If the symptoms are not relieved after rest, it is best to go to the hospital. If you have any of the above symptoms and choose to go to the hospital, I would like to introduce several common tests for the knee joint in the hospital. 1.X-ray examination (X-ray) is used to determine the width of the bone gap, fractures and other bone injuries. 2.MRI MRI can examine the cartilage, ligaments, meniscus, synovial membrane, synovial bursa and other lesions in the joint and bone marrow lesions. Specifically, it can check whether there is fluid accumulation in the knee. 3. Arthroscopy (an endoscope for internal examination of the joint cavity) allows direct observation of the synovial membrane, cartilage, meniscus, and ligaments, and arthroscopic techniques can directly take fluid from the lesion site for examination, providing a pathological basis for the diagnosis of various arthritis. Unlike the above two imaging tests, arthroscopy is not only used for examination, but also for the removal and repair of diseased tissue in the joint, which is less painful, quicker to recover, and reduces the probability of postoperative complications. When visiting a hospital, the choice of which method of examination to use should be based on a clear understanding of your condition, combined with your doctor’s recommendations, and ultimately the most appropriate examination method for you.