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Knee

In humans and other primates, the knee joins the thigh with the leg and consists of two joints: one between the femur and tibia (tibiofemoral joint), and one between the femur and patella (patellofemoral joint).[1] It is the largest joint in the human body.[2] The knee is a modified hinge joint, which permits flexion and extension as well as slight internal and external rotation. The knee is vulnerable to injury and to the development of osteoarthritis.

This article is about the joint. For other uses, see Knee (disambiguation).

It is often termed a compound joint having tibiofemoral and patellofemoral components.[3][4] (The fibular collateral ligament is often considered with tibiofemoral components.)[5]

Accidents (fractures)

Injuries

The removal of a

meniscus

injury

Anterior cruciate ligament

injury

Posterior cruciate ligament

injury

Posterolateral corner

Medial knee injuries

Considerable strain on the knee.

Imaging[edit]

MRI[edit]

Both anterior cruciate ligament (ACL) and posterior cruciate ligaments (PCL) are hypointense on both T1 and T2 weighted images of MRI. However, some high signal striations are often seen at the distal part of the ACL, making ACL higher intensity than PCL on MRI scans.[17]

Media related to Knee at Wikimedia Commons