The Knee

How well do you know your knee?

The knee is a hinge joint formed by two bones, the femur and the tibia.

The knee has four ligaments which provide support. They are the medial collateral ligament (MCL), lateral collateral ligament (LCL), anterior cruciate ligament (ACL), and posterior cruciate ligament (PCL).

Knee AnatomyBetween the femur and the tibia there are two crescent shaped cartilage structures called the medial meniscus and lateral meniscus. The menisci act as shock absorbers and decrease the load on the femur and tibia.

The patella (knee cap) is on the front of the knee and tracks between the medial and lateral condyle (round prominence at the end of a bone) of the femur. The ends of the femur and tibia, as well as underside of the patella, are covered by a shiny articular cartilage called hyaline cartilage. Ideally, articular cartilage allows for a friction and pain free movement.