Your knee is a complex piece of equipment: Bones, cartilage, ligaments, tendons, and muscles meet at or help to form the knee, and any of these could be involved in knee pain. "There are a number of ...

Bone cancer is more common in children and teens, but adults over 60 can also get it. People often mistake symptoms for growth spurts or arthritis. A doctor can do imaging tests and a bone biopsy to ...

Osteochondritis dissecans of the knee may not cause any symptoms, but some people may experience pain and swelling. Engaging in competitive sports may contribute to its development. Doctors may ...

A hyperextended knee, or knee hyperextension, happens when the knee joint bends the wrong way, which may damage the ligaments in the knee. The condition is common in athletes who play high-impact ...

Arthritis in general is defined as damage to cartilage, the connective tissue that cushions joints, explains Jeffrey Zarin, M.D., an orthopedic surgeon at Cedars-Sinai Kerlan-Jobe Institute. “Think of ...

Pain in the back of the knee when straightening the leg is called posterior knee pain. Finding the cause can be difficult as it can come from problems with the bones, muscles, tendons, ligaments, ...