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Noun, pl. knees

1. The thigh with the lower leg and consists of two articulations: one between the femur and tibia, and one between the femur and patella. It is the largest joint in the human body and is very complicated. The knee is a mobile trocho-ginglymus (a pivotal hinge joint), which permits flexion and extension as well as a slight medial and lateral rotation. Since in humans the knee supports nearly the whole weight of the body, it is vulnerable to both acute injury and the development of osteoarthritis. (

2. In humans, the joint or the region of the joint in the middle part of the leg between the thigh and the shank. (

3. Hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella. (

4. Joint between the femur and tibia in a quadruped; corresponds to the human knee. (

Syn: knee joint, human knee, articulatio genus, genu

5. In the horse and allied animals, the carpal joint, corresponding to the wrist in humans. (

6. The part of a garment that covers the knee. (

Word origin: From Old English cneo, cneow “knee.”

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