Most back of the knee pain, known as posterior knee pain, comes from an injury. Certain health conditions, such as arthritis, cysts, nerve damage, and blood clots, can also cause it. Some are serious ...

Doing the splits isn't just a fun party trick — it also increases your flexibility which can stave off injury and improve ...

FLORHAM PARK, N.J. (AP) — New York Jets running back Braelon Allen is seeking a second medical opinion on what coach Aaron Glenn called a “pretty serious” knee injury that will likely sideline him for ...