Osteoarthritis known as “wear and tear”  is the most common form of arthritis . It occurs when the protective cartilage on the ends of your bones wears down over time.

What causes  it ?

The exact cause isn’t known, but that are several factors are thought to increase your risk as

  • Joint injury
  • Age
  • Family history
  • Obesity

Osteoarthritis occurs when the cartilage that cushions the ends of bones in your joints gradually deteriorates. Cartilage is a firm, slippery tissue that permits nearly frictionless joint motion.

In osteoarthritis, the slick surface of the cartilage becomes rough. Eventually, if the cartilage wears down completely, you may be left with bone rubbing on bone.