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Pivot joint
Gelenke Zeichnung01.jpg
1: Ball and socket joint; 2: Condyloid joint (Ellipsoid); 3: Saddle joint; 4 Hinge joint; 5: Pivot joint;
Latin articulatio trochoidea
Gray's subject #70 285

A Pivot joint (trochoid joint, rotary joint) is a joint that moves by rotating. For example, the joint that allows humans to rotate their heads on their necks is a pivot joint. They allow rotation.

Contents

Biology

Pivot joints are found in humans in the neck, forearms, knees, and other parts of the skeletal system that are able to rotate.

A pivot joint in biology is composed of a bone and ligament ring rotating around another bone.

Mechanics

Pivot joints are used in mechanics for things such as a hinge. They are useful for machines that have to rotate in order to complete their job.

References

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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