Try to imagine the knee as being a car. For an exemplary operation, the car needs to have the tires (cartilage), shock absorbers (meniscus), and the lubricant (synovial fluid) in good condition. The knee works the same way. Knee arthrosis is nothing more than “a car that has worn out over time, even if it hasn’t had a crash.”
The knee is a joint formed by the bones of the femur and tibia (in addition to the patella in front of the knee), functioning as a hinge. Thus, for smooth and frictionless movement to occur, the internal structures of the knee (such as the cartilage and menisci) must be functioning well. Please pay close attention to this image, and it will help you understand how the knee works. This is the first step towards a complete understanding of arthrosis (osteoarthritis) of the knees.
Cartilage plays a vital role in the knee, protecting the bone below it (subchondral bone). In addition, it participates in the production of substances such as synovial fluid, a proper “knee lubricant” (can you see the synovial fluid filling the entire knee in the image?). check for knee osteoarthritis treatment (ข้อ เข่า เสื่อม การ รักษา which is the term in Thai)
As the cartilage becomes thinner, the subchondral bone (the one underneath the cartilage) starts to react (as it starts to receive more impact as it is losing cartilage protection). With the progression of cartilage loss (evolution of knee arthrosis), “bone-to-bone” contact (reduction of the joint space) comes into being. This causes the bone below the cartilage to become inflamed and harder (subchondral bone sclerosis) and increases the formation of osteophytes (the famous “parrot beaks”), which are so common in knee arthrosis. X-ray indicating changes that occur in knee arthrosis or osteoarthritis
Have You Ever Heard Of “Parrot Beaks”?
Have you ever heard of “parrot beaks”? Was it easy to understand looking through this X-ray? These are the main changes that occur in knee arthrosis or osteoarthritis. If you have followed up until now and you already know how this process of wear on the knee occurs, the big question arises: what is the cause of this arthrosis? Why did I develop arthrosis of the knees?