How does osteoarthritis affect the knees?

Osteoarthritis affects knees by wearing down the joints from smooth surfaces to abrasive ones, explains Andrew Feldman, MD, an orthopedic surgeon at NYU Langone Medical Center.

Learn all you can about knee osteoarthritis to manage pain and improve your quality of life.

Desmoid tumors are noncancerous and do not metastasize, but they can invade nearby tissues and structures.

Reducing the risk of falls is critical if you have osteoporosis. Start protecting your bones today.

When to see a joint pain specialist, who to see and what to expect.

Beginner cyclist, runner, jogger or hiker? Avoid these common injuries with some advice from an expert.