Knee – Common Conditions Videos

Anatomy of the Knee

The knee is the body’s largest joint. It’s the place where three bones meet: the tibia, the femur and the patella. The knee is a “hinge” joint. It allows the leg to bend in one direction only. Let’s take a closer look at the main parts of the knee’s anatomy.



Anterior Cruciate
Ligament Tear (ACL Tear)

This injury is a tearing of the ACL ligament in the knee joint. The ACL ligament is one of the bands of tissue that connects the femur to the tibia. An ACL tear can be painful. It can cause the knee to become unstable.



Baker’s Cyst

This bulge, also called a “popliteal cyst,” forms behind the knee. It’s a swollen bursa. A bursa is a fluid-filled sac that helps reduce friction between soft tissues and bones. There are several of these sacs in the knee and in other joints. A swollen bursa can be uncomfortable, or even painful.



Deep Vein Thrombosis (DVT)

This condition is a blood clot that forms in a vein deep inside the body. This type of clot most commonly develops in the legs. This condition is dangerous, because the clot can break free and travel through the bloodstream to the lungs.



Meniscus Tear

This is a common injury of the knee. Your knee joint is cushioned by two c-shaped wedges of cartilage called the “menisci.” Each individual cushion is called a “meniscus.” This injury is a tear of one of these cushions.



Osteoarthritis of the Knee

Osteoarthritis, also called degenerative arthritis, is a gradual breakdown of cartilage in the joints. Cartilage is a tough, flexible connective tissue that protects the ends of bones in the joints. Osteoarthritis is common in the knees because the knees bear the weight of the body. Osteoarthritis of the knee can severely impact a person’s lifestyle.



Patellar Tendinitis

This is a pain you feel just below your patella (the bone we commonly call the “kneecap”). It’s an injury to your patellar tendon, which connects the bottom of the kneecap to the shinbone.



Patellofemoral Pain Syndrome

This is a pain you feel in the front of your knee. It involves the patella. That’s the bone we commonly call the “kneecap.” The patella slides up and down in a groove on your femur as you bend and extend your knee. If you have this syndrome, you may have injured the soft tissues that support and cushion your kneecap. Or, you may have some damage to the cartilage on the underside of the kneecap.



High Tibial Osteotomy

This procedure removes a wedge of bone from the tibia, straightening the leg and correcting the deformity known as bow-leggedness.



Viscosupplementation for Arthritis of the Knee

This is an injection of medicine into the knee joint. It lubricates your knee so the bones can glide smoothly. It can help lessen the pain of arthritis.