Each year, nearly half of all runners in the U.S.wrestle with some type of pain or injury. The most commonly affected area, totaling 27 percent of running injuries is—you guessed it—the knee. If you ...

Knee pain often results from injuries to muscles, tendons, or ligaments. Deep vein thrombosis is a severe condition that can cause pain behind your knee. Most minor knee injuries can heal on their own ...

It can also lead to inflammation in the prepatellar bursa in the front of the kneecap. Bursae are thin, slippery, fluid-filled sacs in the body that act as cushions between soft tissues and bones.