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pivot joint

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Pivot joint
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pivot joint  
n.  A joint in which a bone rotates around another; a joint permitting only rotating movement.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Pivot joint
Get the Answers You're Looking For. Pivot joint
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Medical Dictionary

Main Entry: pivot joint
Function: noun
: an anatomical articulation that consists of a bony pivot in a ring of bone and ligament (as that of the dens and atlas) and thatpermits rotatory movement only called also trochoid
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

pivot joint piv·ot joint (pĭv'ət)
n.
See trochoid joint.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia

pivot joint

in vertebrate anatomy, a joint that allows only rotary movement. It is exemplified by the joint between the atlas and the axis (first and second cervical vertebrae), directly under the skull, which allows for turning of the head from side to side. Pivot joints also provide for the twisting movement of the bones of the forearm (radius and ulna) against the upper arm, a movement used, for instance, in unscrewing the lid of a jar

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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