In many cases, some people feel pain in the knees especially during the rise of the ladder, with a feeling of cracking during the movement of the joint, which makes him think he suffers from stiffness in the knee, despite the ability of cartilage arthroscopic endurance and renewal beyond the age of sixty or sixty-fifth The knee joint has the advantage of any other joint, with the presence of cartilage of the semen where there is in each articular cartilage external and internal cartilage as well as the articular cartilage lining the ends of the bone, and earn the cartilage seminal Detailed r In addition to the flexibility of movement during walking and other daily movements, if any part of this corneal cartilage is torn, it causes pain in the knee while walking, with a feeling of crackling during movement, which suggests to the patient that he suffers from stiffness in the knee, From this belief that the patient can not sit squatting or bend the entire knee joint, which is the case for football players, and other sports where the knee twisted during the exercise, the cartilage ruptures ..
