Document Detail


Area and shape changes of the carpal tunnel in response to tunnel pressure.
MedLine Citation:
PMID:  21608024     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Carpal tunnel mechanics is relevant to our understanding of median nerve compression in the tunnel. The compliant characteristics of the tunnel strongly influence its mechanical environment. We investigated the distensibility of the carpal tunnel in response to tunnel pressure. A custom balloon device was designed to apply controlled pressure. Tunnel cross sections were obtained using magnetic resonance imaging to derive the relationship between carpal tunnel pressure and morphological parameters at the hook of hamate. The results showed that the cross-sectional area (CSA) at the level of the hook of hamate increased, on average, by 9.2% and 14.8% at 100 and 200 mmHg, respectively. The increased CSA was attained by a shape change of the cross section, displaying increased circularity. The increase in CSA was mainly attributable to the increase of area in the carpal arch region formed by the transverse carpal ligament. The narrowing of the carpal arch width was associated with an increase in the carpal arch. We concluded that the carpal tunnel is compliant to accommodate physiological variations of the carpal tunnel pressure, and that the increase in tunnel CSA is achieved by increasing the circularity of the cross section.
Authors:
Zong-Ming Li; Tamara L Masters; Tracy A Mondello
Related Documents :
3698994 - Effect of arm position on cardiovascular responses during isometric handgrips.
8678134 - The effect of thigh-length support stockings on the hemodynamic response to ambulation ...
1858664 - The physiological cost of wearing a disposable respirator.
24690744 - Super-absorbent polymer dressings and sub-bandage pressure: a concern?
7116104 - Urodynamic evaluation after vaginal repair and colposuspension.
23741864 - Microbial desulfurization of diesel by desulfobacterium indolicum.
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2011-05-23
Journal Detail:
Title:  Journal of orthopaedic research : official publication of the Orthopaedic Research Society     Volume:  29     ISSN:  1554-527X     ISO Abbreviation:  J. Orthop. Res.     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-10-17     Completed Date:  2011-12-09     Revised Date:  2014-09-21    
Medline Journal Info:
Nlm Unique ID:  8404726     Medline TA:  J Orthop Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1951-6     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Orthopaedic Research Society.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Anatomic Landmarks
Cadaver
Carpal Bones
Carpal Tunnel Syndrome / pathology*,  physiopathology
Female
Humans
Magnetic Resonance Imaging
Male
Median Nerve / pathology*,  physiopathology
Middle Aged
Pressure*
Wrist Joint / innervation*,  pathology*,  physiology
Grant Support
ID/Acronym/Agency:
R03 AR054510/AR/NIAMS NIH HHS; R03 AR054510-04/AR/NIAMS NIH HHS; R03AR054510/AR/NIAMS NIH HHS; R21 AR062753/AR/NIAMS NIH HHS
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Postoccupancy evaluations in zoological settings.
Next Document:  Surprising evidence of pelvic growth (widening) after skeletal maturity.