I. Some people play basketball or badminton and hurt their knee joints, do they need to go to the hospital for examination? What kind of examination do I need to do? If the following conditions occur at the time of injury 1. abnormal ringing is heard in the joint when injured; 2. swelling is evident in the joint after the injury; 3. it is difficult to walk with pain after the injury, or the pain is significantly worse after the injury; it is recommended to go to the hospital immediately, there is a meniscus, ligament damage, or even fracture may be. If you do not have any of the above three conditions, it is recommended that you immediately discontinue exercise, go home and rest, apply ice within 24 hours, and after 24 hours you can apply heat and wear a knee brace for 3-5 days, most of the symptoms will be significantly relieved, if not significantly relieved, it is recommended that you go to the hospital to rule out meniscus and ligament damage. How to confirm the diagnosis of meniscus injury of knee? Knee meniscal injuries generally require an examination by a professional knee surgeon to determine the mechanism of injury, pain characteristics and physical examination, and because objective evidence is now required, many patients require magnetic resonance imaging (MRI). However, if you have mechanical symptoms in the joint: joint entrapment and sudden muscle weakness are often highly suggestive of meniscal injury. 1.Joint compression: the joint suddenly gets stuck during activity, unable to flex and extend the knee joint normally, you need to shake your leg a few times to return to normal 2.Sudden muscle weakness: you suddenly feel weakness in your thigh muscles during activity, you have the feeling of hitting a weak leg and falling 3.Some people’s meniscus injury is not very serious when it first starts, it does not affect walking, but why, after a period of time, it hurts more? Meniscus injury is usually not very serious at the beginning, so it may only cause occasional pain when walking and does not affect the walking function. However, as you walk and play sports, the original rupture inevitably increases in size and the ruptured meniscus wears down the articular cartilage, making your symptoms worse and worse. This is like a small opening in your clothes at the beginning, you can still wear it without sewing, but after you wear it a few times and wash it in the washing machine a few times, the opening will become bigger and bigger and you can’t wear it anymore. Fourth, for early meniscus injury, is it suitable for conservative treatment or surgery? Whether a meniscus injury requires surgery is not directly related to early or late injury, but depends on the type and extent of the injury. Generally MRI will give us a clear indication of the type and extent of meniscus injury. Because the meniscus is a three-dimensional structure, the analogy of a garment is not appropriate, but a wall is more appropriate. Magnetic resonance I and II degree meniscus injury: later we will call this meniscus injury, which is equivalent to a wall with good appearance and function, just a hole inside the wall, this hole does not accumulate the surface of the wall and affect the strong structure. This injury can often be treated conservatively and the meniscus will scar and repair. Of course, this leaves a hidden danger that this hole will expand again the next time the injury occurs. Magnetic resonance III, IV degree meniscus injury: later we call it meniscus rupture, equivalent to the wall cracked or can not play a normal supporting role, this injury whether in early or late, once found to be early surgery, otherwise with your activity and movement, just like the front of the clothing tears, will get bigger and bigger. At the same time the ruptured meniscus will wear out the joint cartilage, (you can imagine the smooth surface of the machine with some sand or small stones), which is what doctors call osteoarthritis, please note that there is no good medical solution for articular cartilage damage and osteoarthritis, except for joint replacement most of the treatment methods are satisfactory for about 60-70% of patients, can you guarantee that you are not the 30%? Fifth, some people do not want to have surgery, but want to use some topical drugs for bruises and injuries, or perform some functional exercises, can such conservative treatment restore the function of the knee? This question has already been answered in the previous question, if you have a degree I or II injury, you can certainly treat it conservatively. I am not a TCM doctor, so I cannot say how these drugs work, but in terms of Western medicine theory, patients who are able to recover completely with topical drugs may eventually recover without them.