Step 2 get down. When squatting, the knee joint bears 8 times the weight, which is easy to damage the meniscus behind it. And articular cartilage will be destroyed.
3. Movement that changes direction and speed very quickly. For example, playing football, basketball and badminton. It is easy to cause meniscus injury or ligament rupture.
4. The action of kneeling on the ground. It not only directly damages the cartilage of femur and tibia, but also damages the cartilage of patella.
5. cross-legged. It leads to the relaxation of lateral collateral ligament, joint instability and further injury of knee joint.
Anatomy of the knee joint Every tissue of the knee joint has its function and injury mechanism. Here's an anatomical introduction to their injury mechanism. In other words, it is clear which actions are most likely to damage which structures.
Meniscus:
Meniscus is a fibrocartilage plate located in the knee joint, and the outer O is C-shaped. Its main function is to absorb and cushion the impact and increase the stability of the joint. When the knee joint is twisted during flexion and extension, the meniscus can't move with the femur in time, which leads to injury. The common action is to suddenly change direction in the process of fast marching under basketball or football. Think about the playing styles of Ross, Shao Wei and Wade.
Without ink marks, as long as the knee joint is severely flexed and stretched, it will damage the knee joint, such as running far, running fast, climbing mountains for a long time, squatting and so on. Why?
You can think of the knee joint as a bearing. If you use it too much, it will wear out. When one day there is less lubricant in the knee joint, two soft bones will be ground. After a long time, it will wear out and become arthritis, pain, swelling and even deformation, and everything will come. At that time, it will have to receive treatment and even need surgery.
The knee joint is an important part that supports us to walk upright, but it is also a joint that is easily damaged. Especially for the elderly, if you don't pay attention to the way or amount of exercise, it will only lead to knee joint injury. Therefore, for the elderly, exercise is good, but you need to pay attention to the way and amount of exercise. So which sports hurt your knees the most?