What causes knee pain

Sometimes people will have inexplicable knee pain. If the pain is mild, it is not a big deal, but if the pain is severe, it will be inconvenient to walk. The knee is where the thigh and calf connect. If there is a problem with the knee, it will affect people's legs, and knee pain is often a symptom of a certain disease. So people should not ignore it. Many times when people have knee pain they just rest for a while and then ignore it until the pain goes away. In fact, this is very wrong.

The human body is amazing. If there is any problem, people will experience pain or other sensations in some part of the body. In fact, this is the body's way of sounding the alarm to tell you that there is something wrong with your body. So what causes knee pain?

The knee joint is a large and complex flexion joint in the human body. It is subjected to great stress and has a stable and flexible structure. Knee pain occurs from time to time, and this pain is often ignored or arbitrarily attributed to diseases such as arthritis. In fact, there are many reasons that cause knee pain.

In daily life, most joint pains are not caused by trauma. Prolonged cold joints and huge temperature differences are the main causes of joint pain. Especially in autumn, when the weather alternates between cold and warm, low temperatures or huge temperature differences can cause muscle and blood vessel contraction, causing joint pain. If you encounter this situation, the first thing to do is to keep warm as much as possible, you can use hot compresses; the second thing is to reduce the amount of exercise and let the joints rest. If the above methods do not improve the knee pain, you should go to the hospital to find out the cause.

There are several common injuries that can cause knee pain:

1. Fat pad strain The fat pad fills the gap in the front of the knee joint, which strengthens the joint stability and reduces friction. The cause of fat pad strain may be due to trauma or long-term friction that causes the fat pad to become congested, thickened and inflamed, and adhere to the patellar ligament, thereby limiting the movement of the knee joint. This type of injury often occurs in people over 30 who frequently walk, climb mountains, or squat. Patients will feel pain in the knee joint, which worsens when it is fully extended, but the joint movement is not restricted. Symptoms are obvious after exertion.

2. Meniscus injury Meniscus injury is a common injury among athletes. When the lower limbs are weight-bearing, the feet are fixed, and the knee joints are slightly flexed, if the knee is suddenly excessively internally rotated or externally extended (for example, in volleyball, when a player suddenly turns around and dives to save the ball while defending), it may cause a meniscus tear. Meniscus injury will cause an obvious tearing feeling in the knee, followed by joint pain, limited movement, and limping when walking. The joints show swelling and a feeling of slipping, and there is a popping sound when the joints move.

3. Traumatic synovitis of the knee The synovium of the knee is one of the main structures of the knee joint. Synovial cells secrete synovial fluid, which can keep the articular cartilage surface smooth and increase the range of joint motion. When the synovium is damaged due to trauma or excessive strain, a large amount of fluid will accumulate, increasing the pressure within the joint. If it is not eliminated in time, it can easily cause joint adhesion and affect normal activities. Patients will feel pain, swelling, tenderness in the knee joint, and a frictional and astringent sound in the synovium. The most obvious characteristic of pain is that when the knee joint is actively and extremely extended, especially when the knee extension movement is performed with a certain resistance, the pain below the patella will be aggravated, and the pain will also be significantly aggravated during passive extreme flexion.

4. Osteoarthritis of the knee is a disease that is more common in middle-aged and elderly people, mostly women. Excessive weight load is the main cause of disease. The knee joint will be swollen and painful, and sometimes there will be a grinding sound when moving the joint. The knee may develop a varus deformity with medial pain.

5. Knee ligament injury: The stability of the knee joint is relatively poor when it is slightly flexed. If it is suddenly subjected to external force and causes eversion or inversion at this time, it may cause injury to the medial or lateral collateral ligament. Medial collateral ligament injuries account for the vast majority of clinical cases. Taking this injury as an example, the patient will have a clear history of trauma, pain and tenderness on the medial side of the knee, pain that worsens when the calf is passively abducted, swelling on the medial side of the knee, and ecchymosis after a few days. Knee joint movement may be restricted.

The above five injuries that cause knee pain cannot be healed by daily care alone. Experts remind: If you have the above pain characteristics, you should ask your doctor for a clear diagnosis as soon as possible to avoid missing the best time for treatment.

In daily life, although work and life make people very busy, they should not neglect their bodies while being busy. Instead, we should pay more attention to it. If you feel uncomfortable somewhere in your body, you must check it out in time to avoid the condition from getting worse over time.