Document Detail


Scaphoid and lunate movement in different ranges of carpal radioulnar deviation.
MedLine Citation:
PMID:  21131137     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
PURPOSE: We aimed to investigate scaphoid and lunate movement in radial deviation and in slight and moderate ulnar deviation ranges in vivo.
METHODS: We obtained computed tomography scans of the right wrists from 20° radial deviation to 40° ulnar deviation in 20° increments in 6 volunteers. The 3-dimensional bony structures of the wrist, including the distal radius and ulna, were reconstructed with customized software. The changes in position of the scaphoid and lunate along flexion-extension motion (FEM), radioulnar deviation (RUD), and supination-pronation axes in 3 parts--radial deviation and slight and moderate ulnar deviation--of the carpal RUD were calculated and analyzed.
RESULTS: During carpal RUD, scaphoid and lunate motion along 3 axes--FEM, RUD, and supination-pronation--were the greatest in the middle third of the measured RUD (from neutral position to 20° ulnar deviation) and the smallest in radial deviation. Scaphoid motion along the FEM, RUD, and supination-pronation axes in the middle third was about half that in the entire motion range. In the middle motion range, lunate movement along the FEM and RUD axes was also the greatest.
CONCLUSIONS: During carpal RUD, the greatest scaphoid and lunate movement occurs in the middle of the arc--slight ulnar deviation--which the wrist frequently adopts to accomplish major hand actions. At radial deviation, scaphoid and lunate motion is the smallest.
Authors:
Jin Bo Tang; Jing Xu; Ren Guo Xie
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-12-04
Journal Detail:
Title:  The Journal of hand surgery     Volume:  36     ISSN:  1531-6564     ISO Abbreviation:  J Hand Surg Am     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7609631     Medline TA:  J Hand Surg Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  25-30     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.
Affiliation:
Department of Hand Surgery, Hand Surgery Research Center, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China. jinbotang@yahoo.com
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