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.

It may be a sign of a serious health condition. Here’s what you need to know.

Overtraining and improper form may lead to sprains, strains, and other issues.

Back pain is common, but it's not inevitable. Work on these habits every day to help relieve strain on your back.

Learn how PsA affects heart health, plus ways to protect yourself from heart disease.