What is Osteoarthritis?

In a healthy knee, the ends of the thigh bone, the shin bone, and the knee cap are covered by a layer of articular cartilage. This cartilage acts as a cushion and provides a smooth, gliding surface for the movement of the knee.

Through the years, tremendous demands are placed on our knees. In some, the cartilage can begin to fracture or wear away. If the wear becomes significant, the rubbing of exposed bone can result in debilitating pain. This is called osteoarthritis (OA) and it affects millions worldwide.

Osteoarthritis is considered a progressive disease but the exact causes of are not fully understood.  Osteoarthritis is very common in adults over the age of 50, but the condition can affect younger adults as well.  People who have a history of past knee injuries, or have placed a lot of stress on their knees from heavy physical activity or weight are also at increased risk. 

Adults who have osteoarthritis of the knee report having pain, stiffness, or swelling in the knee joint.  Many report limitations on their ability to engage in basic activities such as walking, kneeling, and climbing stairs.  Osteoarthritis of the knee is a leading cause of disability in older adults.