The role of the knee joint permeates all aspects of our lives, and every step we take is inseparable from the knee joint, so knee pain can seriously affect our quality of life, even squatting down to tie our shoes can feel pain. So, what are the causes of knee pain? What can we pay attention to in our daily life and activities to avoid this injury? 1. Fat pad strain The fat pad fills the gap at the front of the knee joint and has the effect of strengthening the joint stability and reducing friction. Trauma or long-term friction causes congestion, hypertrophy and inflammation of the fat pad, and adhesions with the patellar ligament, which can limit knee joint activities. This injury occurs in people over the age of 30 who walk, hike or squat frequently. Patients may feel pain in the knee joint, and the pain increases when fully extended, but joint movement is not restricted, and the symptoms are obvious after exertion. 2. Meniscus injury This is a common injury in athletes. A meniscal injury will have a distinct sensation of tearing in the knee, followed by joint pain, restricted movement, and walking limp. The joint exhibits swelling and slippage, and there is a popping sound when the joint moves. 3. Traumatic synovitis of the knee joint Damage to the synovial membrane due to factors such as trauma or overstrain can produce a large amount of fluid, which increases the pressure in the joint and, if not eliminated in time, can easily cause joint adhesions and affect normal activities. Patients will feel pain, swelling and pressure in the knee joint, and the synovial membrane will have a frictional and astringent sound. The most obvious feature of the pain is that when the knee joint is actively and extremely extended, especially when there is a certain resistance to do knee extension movement, the pain in the lower part of the patella will increase, and the pain is also significantly increased when it is passively and extremely flexed. 4, osteoarthritis of the knee joint This condition is mostly seen in middle-aged and elderly people, mostly women. Overweight loading is the main cause of the disease. The knee joint will be swollen and painful, sometimes there will be friction sounds when moving the joint, and the knee may have inversion deformity with medial pain. 5. Knee ligament injury The stability of the knee joint is relatively poor when it is slightly flexed. If sudden external force causes valgus or inversion at this time, it may cause medial or lateral collateral ligament injury. Medial collateral ligament injuries account for the vast majority of clinical cases. 6, warm up improper or no warm body Many people exercise, often first do leg extension exercises, I do not know that leg extension exercises is the main cause of knee injury. When exercising, the knee has to withstand enormous pressure, so it must be properly warmed up to avoid injury. Exercise without warming up is the same as not giving the joints natural lubrication, and the knee joint certainly does not run smoothly. In addition, cold, tense muscles are also detrimental to the smooth operation of the joint. Suddenly starting or ending a movement can tear the muscles around the joint, causing or exacerbating overuse injuries. 7, excessive exercise Excessive exercise is often counterproductive and not only reduces physical fitness, but is also a factor in knee injuries. If you feel uncomfortable with your knee while exercising, that is acceptable; if you feel pain after doing exercise, or the next day, the situation is not good. Prolonged pain, limp and swelling around the knee, these are the warning signs of knee injury, should immediately seek medical attention. 8, too fat weight improper diet is too obese people, the knee joint will have to bear more weight, the knee sooner or later, “the death of”. Like walking up the stairs such a simple action, the pressure on the knee is usually 4 times! If you are 5 kg overweight, each time you climb the stairs, it is equal to carrying 20 kg more “fat”! Generally, the treatment of knee pain is based on conservative therapy, the most common of which is medication to reduce pain. In addition, injections or physiotherapy are used, and only in severe cases is surgery performed. When the knee injury is mildly painful, there is no swelling, and you can move or walk, you can usually get better after 3-7 days of rest. When there is swelling, severe pain or a sudden jamming of the joint or a clicking sound, you need to seek medical attention. It is important to remind elderly people not to use hot compresses to reduce swelling and pain during acute knee attacks, especially when the knee joint is red and swollen and hot, so as not to overheat and aggravate the local swelling, but to use pain relief creams or acupuncture point compresses externally.