Slideshow: Why Knees Hurt
Your knees have lots of parts, and you use them a lot, so there's plenty that could go wrong. Learn about common things that can cause knee pain.
Slideshow: Knee Pain Dos and Don’ts
Your knees go through a lot in the course of a day, and sometimes they can run into trouble. Here are a few things you can do when knee pain hits.
Slideshow: Knee Exercises to Help Prevent Injury
Getting over a knee injury? WebMD shows you moves that can help make you stronger, so you're less likely to get re-injured.