The knee is the largest joint on the body and most prone to issues like injury. A puffy, stiff, or painful knee can limit ...

The anterior cruciate ligament (ACL) is one of the most common ligaments to be injured. Learn about the four major ligaments of the knee.

Patellofemoral pain syndrome (PFPS), also known as runner's knee, means that you have pain in front of the knee or around the kneecap (patella). This is where the knee connects with the lower end of ...