Results for lunate bone
On this page:
 
Dictionary:

lunate bone


n.

The second of three bones forming the proximal row of bones in the wrist. Also called semilunar bone.


 
 

A wrist bone that articulates with the triquetral and scaphoid, the hamate and capitate in front, and the radius behind. See also carpus.

 
Medical Dictionary: lunate bone

n.

The second of three bones forming the proximal row of bones in the wrist between the scaphoid and triquetrum bones and articulating with the radius, scaphoid, triquetrum, hamate, and capitate bones. Also called semilunar bone.

 
WordNet: lunate bone
Note: click on a word meaning below to see its connections and related words.

The noun has one meaning:

Meaning #1: one of the eight small wrist bones
  Synonyms: semilunar bone, os lunatum


 
Wikipedia: lunate bone
Bone: Lunate bone
Carpus.png
BONES OF HAND
Proximal: A=Scaphoid, B=Lunate, C=Triquetral, D=Pisiform
Distal: E=Trapezium, F=Trapezoid, G=Capitate, H=Hamate
Gray222.png
The left lunate bone
Latin os lunatum
Gray's subject #54 224
Articulations radius proximally
capitate and hamate distally
scaphoid laterally
triangular medially
MeSH Lunate+Bone
Dorlands/Elsevier o_07/12598459

The lunate bone (semilunar bone) is a bone in the human hand that may be distinguished by its deep concavity and crescentic outline. It is situated in the center of the proximal row of the carpus, or wrist, between the scaphoid and triangular bone.

The etymology derives from the Latin luna which means "moon."

Surfaces

The superior surface, convex and smooth, articulates with the radius.

The inferior surface is deeply concave, and of greater extent from before backward than transversely: it articulates with the head of the capitate, and, by a long, narrow facet (separated by a ridge from the general surface), with the hamate.

The dorsal and palmar surfaces are rough, for the attachment of ligaments, the former being the broader, and of a somewhat rounded form.

The lateral surface presents a narrow, flattened, semilunar facet for articulation with the scaphoid.

The medial surface is marked by a smooth, quadrilateral facet, for articulation with the triangular bone.

See also

Additional images

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.


 
 

Join the WikiAnswers Q&A community. Post a question or answer questions about "lunate bone" at WikiAnswers.

 

Copyrights:

Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.  Read more
Sports Science and Medicine. The Oxford Dictionary of Sports Science & Medicine. Copyright © Michael Kent 1998, 2006, 2007. All rights reserved.  Read more
Medical Dictionary. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company Read more
WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved.  Read more
Wikipedia. This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Lunate bone" Read more

Search for answers directly from your browser with the FREE Answers.com Toolbar!  
Click here to download now. 

Get Answers your way! Check out all our free tools and products.

On this page:   E-mail   print Print  Link  

 

Keep Reading

Mentioned In: