It’s one of the main types of arthritis. It’s produced as result of the joints wear, thing that occurs en many cases, between the sport people and people who have used in excess some of their joints. It can be caused by an injury or by a defect of a protein from which is done the cartilage. Usually it demonstrates during the old age, because it’s about a natural consequence of the process of ageing, and affects above all the bones joints that support weight, like the hips, knees or the spine. The surface of the cartilage from being soft hardens and produces friction, which produces wear and damage, becoming the joint stiff and painful (very little pain); what it doesn’t observe is inflammation. This disease is not disabling, but it becomes the bones fragile. Sometimes deformations in the bones develop called osteophytes.
The Osteoarthritis is a joint wear; you have to prevent it before 40 years

Generally the osteoarthritis occurs after 40 years, but affects a great majority from the age of 60 years; however, it’s so light that only it’s noticed when there is radiography in the way. The osteoarthritis affects mainly the women in a proportion of 3 to 1, with relation to men.