The modular rear end was located to the chassis tub by a hinge joint. The jaw articulates via a hinge joint between the quadrate and articular. This prevents hyperextension and forms a hinge joint with the trochlea of the humerus. In insects and other animals, the term knee widely refers to any hinge joint. The knee is the largest hinge joint in the human body. The elbow is a hinge joint without rotary movements and the forelimbs are relatively short. A hinge joint can be considered a modified sellar/saddle joint, with reduced movement. As the breech moves back under blowback power, the hinge joint moves upward.