What is a knee injury?
A person with a knee injury has damage to the structures in the knee, caused by an injury. A knee injury may involve the muscles, tendons, bone, cartilage, or ligaments that support the knee joint. Common knee injuries include knee contusion, knee sprain, and knee fracture.

What are the symptoms of a knee injury?
Symptoms of a knee contusion include knee pain, knee swelling, knee tenderness, and bruising of the knee. More serious knee injuries may cause severe knee pain, knee deformity, and the inability to move the knee or stand on the injured leg.

How does the doctor treat a knee injury?
Treatment for a minor knee injury includes rest, elevation, cold compresses, and nonsteroidal anti-inflammatory medications for pain. Additional treatment may include crutches and an elastic wrap to the knee. Treatment for a more serious knee injury may include the application of a knee splint or leg cast, and narcotic pain medications for pain. Treatment for a severe knee injury, such as a knee fracture or dislocation, may include surgery to realign the bones.