What is Osteoarthritis?

Osteoarthritis is the most common form of arthritis, occurring when the protective cartilage that cushions the ends of bones gradually wears down over time. This leads to joint pain, stiffness, and swelling, most often affecting the knees, hips, hands, and spine.

It tends to develop gradually with age, though injury, joint overuse, excess weight, and genetics can all increase risk. Symptoms often come and go, sometimes flaring up with activity or changes in weather, and typically ease with rest.