As you bend and straighten, you'll feel a swollen lump like a water balloon and pain behind your knee. If you're an avid runner, that mileage could be to blame.

Nerve flossing, also known as nerve gliding, is a technique that can alleviate knee pain for cyclists. Here’s our expert ...

Dr. Carrie Jose, in her latest Health and Wellness, gives three signs it may something else if your hamstring isn’t healing ...

Septic arthritis of the knee can cause severe pain, swelling, and difficulty moving the joint. Treating symptoms usually involves antibiotics and other measures. Learn more.

A: A Baker's cyst is a collection of fluid behind the knee. It was named after a British surgeon, William Baker, who described these cysts in the late 1800s. It's sometimes called a popliteal cyst.