According to the Centers for Disease Control and Prevention, about 14 percent of Americans over the age of 24 have osteoarthritis. This is a common type of arthritis in which the cartilage that protects the bones in your knees breaks down, leaving you more vulnerable to knee pain. After the age of 65, that number rises steeply to nearly 34 percent. Experts have found that, in most cases, knee pain in older people is due to osteoarthritis.

WHAT IS OSTEOARTHRITIS IN RENO?
Definition from Wikipedia: Osteoarthritis (OA) is a type of joint disease that results from the breakdown of joint cartilage and underlying bone. The most common symptoms are joint pain and stiffness. Usually, the symptoms progress slowly over years. Initially, they may only occur after exercise but can become constant over time. Other symptoms may include joint swelling and decreased range of motion. Osteoarthritis is believed to be caused by mechanical stress on the joint and low-grade inflammatory processes. It develops as cartilage is lost and the underlying bone becomes affected. As pain may make it difficult to exercise, muscle loss may occur. Diagnosis is typically based on signs and symptoms, with medical imaging and other tests used to support or rule out other problems.