from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several types of bone articulation permitting free motion in a joint, as that of the shoulder or hip.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A joint that can move freely in various planes
from the GNU version of the Collaborative International Dictionary of English
- n. A form of articulation which admits of considerable motion; a complete joint; abarticulation. See articulation.
from The Century Dictionary and Cyclopedia
- n. In anatomy, that articulation of bones which leaves them free to move in some or any direction; free, as distinguished from fixed, arthrosis; thorough-joint: applied both to the joints themselves and to the motion resulting from such mechanism.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a joint so articulated as to move freely
In a considerable part of their extent, especially in advanced life, they are separated by a space containing a synovia-like fluid, and hence the joint presents the characteristics of a diarthrosis.
The incudomalleolar joint is a saddle-shaped diarthrosis; it is surrounded by an articular capsule, and the joint cavity is incompletely divided into two by a wedge-shaped articular disk or meniscus.
Although coracoclavicular diarthrosis is of no significance other than academic, it is important to recognize this variation and the clinical symptoms that may occur, as it is a cause of shoulder pain and arthritis in this or the adjacent sternoclavicular and acromioclavicular joint.