Patients aged 45 to 55 years with knee pain that improves with rest and topical medication, but painful again with walking, most often have meniscal damage present at this time with an MRI. If the damage is detected early and the cartilage is not yet worn out, a minimally invasive arthroscopic treatment may not be necessary to completely remove the meniscus, but rather to do a radiofrequency shaping to remove only a small part of the damaged meniscus, which will have almost no effect on future activities. If delayed again and again, the meniscus damage can hardly heal itself because of poor blood supply, and the damage will gradually aggravate, and the meniscus will have to be partially removed after a long time, and the broken meniscus not only cannot play the role of a cushion, but also wears the normal upper and lower joint surfaces like a piece of sandpaper. It is really more than worth the loss. For younger adolescents, most of the injuries are due to intense sports sprains or congenital disc meniscus injuries. Children are very athletic and usually do not stop playing sports because of pain. In children, the pain cannot be caused just by what is called growing pains. An MRI can usually clarify the diagnosis. Children are better healers and have a higher chance of healing after meniscus stitches than adults. A 3.0T MRI is essential for all patients with knee pain that does not improve with treatment. It is best to find a joint specialist, preferably a sports injury specialist, after the examination and ask them to look at the film for you, the diagnosis will be very accurate. You will also be able to understand what is going on with your knee joint.