Knee

Knee Conditions

ACL Injuries

An anterior cruciate ligament (ACL) injury occurs when one of the knee ligaments stretches or tears. Learn about risks, tests and treatments for ACL injuries.

Knee Arthritis

Arthritis in the knee joint characterized by pain and inflammation. There are several common forms of arthritis that affect the knee, including osteoarthritis and rheumatoid arthritis. A ligament tear or fracture also may lead to knee arthritis. Learn about risks, tests and treatments for knee arthritis.

Patellar Tracking Disorder

Patellar tracking disorder occurs when the kneecap (patella) moves out of its normal alignment during bending or straightening of the leg. Learn about risks, tests and treatments for patellar tracking disorder.

Patellar Tendinitis

The patellar tendon helps lower-leg muscles extend. Patellar tendinitis occurs when tiny tears begin to develop in the tendon and it becomes inflamed. Learn about risks, tests and treatments for patellar tendinitis.

Knee Sprain

Knee ligaments are bands of tissue that connect bones to each other in the joint. A knee sprain occurs when these ligaments stretch or tear. Learn about risks, tests and treatments for knee sprain.

Posterior Cruciate Ligament (PCL) Injuries

Injuries to the posterior cruciate ligament (PCL) usually are the result of a forceful impact that causes the leg to move in an unusual manner. Learn about risks, tests and treatments for PCL injuries.