The amount of articular fluid decreases, which leads to increased friction between the articular surfaces of the bones and their wear, as well as to changes in the structure and malnutrition of the cartilage. The pressure in the joint ceases to be negative, this leads to the removal of the articular surfaces from each other, which also affects the mobility of the joint.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.