Causes of knee pain

The human knee joint is an important joint that supports leg movement. If the knee joint is stimulated and painful for some reason, it will be difficult to walk normally. There are many patients with knee pain. The knee joint has not been injured, and the skin has no redness or swelling, but it is still very painful. What causes this?

In fact, there are many reasons that cause knee pain. Women who often wear high heels can cause excessive damage to the knee joints, which can lead to knee pain. However, the most common cause of knee pain is still some joint diseases. The specific reasons are as follows:

1. Injury of the ligaments around the joint: The stability of the knee ligaments is relatively poor when the knee joint 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. The patient will have a clear history of trauma, knee pain, swelling, bruising, and limited motion.

2. Cartilage damage is mainly meniscus damage of the knee joint. When the knee joint is slightly bent, if the knee is suddenly excessively internally rotated or externally extended (for example, when playing football, bending the calf, turning around and kicking the ball), it may cause a meniscus tear. Meniscus injury will cause an obvious tearing feeling in the knee, followed by joint pain, limited movement, limping when walking, and popping when the joint moves.

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.

4. Osteoarthritis of the knee. This disease 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 friction sound when moving the joint. The knee may develop a varus deformity with medial pain. Treatment involves joint replacement, which is a mature treatment method for knee osteoarthritis.

5. Knee ligament injury. The stability of the knee joint is relatively poor when it is slightly bent. 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.

In fact, there are many reasons that cause knee pain, which are not listed here one by one. In order to solve the problem of knee pain, you must first see what causes your knee pain, and then carry out targeted treatment based on the cause. Only in this way can the problem be completely solved. And when you have knee pain, you must pay attention to rest.