Nearly 27 million Americans now struggle with osteoarthritis , the most common form of arthritis. For decades, people thought arthritis was simply the result of aging. Today, people are learning that OA—the gradual breakdown of cartilage in the joint caused by wear and tear—affects people of every age. And more can be done to relieve the discomfort it causes.

Joint pain, swelling and stiffness often accompany the progression of OA and can seriously limit joint function. For those who suffer from the symptoms of knee OA, pain management is often a top priority. For patients with mild to moderate stages of knee OA, clearing up a few myths and taking some precautionary measures can go a long way.

Dr. Kevin Vincent, a physical medicine and rehabilitation physician in the University of Florida College of Medicine department of orthopaedics and rehabilitation in Gainesville, Fla., answers some common questions about osteoarthritis of the knee.

•I'm in my late 40s. When do I have to start worrying about osteoarthritis?

Contrary to popular belief, age is not a determining factor in osteoarthritis of the knee. Wear and tear on the knee joint is the main cause of the onset and progression of the disease. Repeated participation in activities that put excess pressure on the knee joint, such as tennis and basketball, or previous injury are likely to contribute to the breakdown of cartilage over time.

•Is surgery my only option? There are a variety of nonsurgical treatments to consider that can help manage the pain of knee OA. From weight loss to hyaluronic acid injections, there are a number of options that a doctor may recommend.

•Do I have to stop doing activities if I am suffering from knee OA?

Finding the right treatment has helped many OA sufferers remain active long after they have been diagnosed. Successful treatment can result in decreased pain and greater mobility, allowing for increased activity and aiding in weight loss, both of which are key to combating OA.

A number of low impact activities, such as biking or swimming, are excellent for remaining active while reducing the stress on the knee joint. Talking to a doctor is the best way to know which activities are right. After receiving HA injections, many patients go back to an active lifestyle.

•When should I talk to my doctor about my symptoms?

It is never too early to ask questions. Talk to a doctor about joint pain and symptoms that may be signs of knee OA. Keep a journal of symptoms, noting the response to each treatment tried.

This story provided by North American Precis Syndicate Inc.