Medically reviewed by Grant Hughes, MD If you experience knee pain after sitting with your legs bent, it may be caused by ...

It's the most common condition that causes knee pain. Pain from osteoarthritis might occur in a specific location or move around. Like a hinge on a door, your knee needs lubricant to allow the ...

Your knees have lots of parts, and you use them a lot, so there's plenty that could go wrong. WebMD explains common things that can cause knee pain.

U.S. Army Staff Sgt. Rayshaun Smith thought his knee pain was caused by his active lifestyle. It was an early sign of a rare ...