Document Detail


Narrowing carpal arch width to increase cross-sectional area of carpal tunnel--a cadaveric study.
MedLine Citation:
PMID:  23583095     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Carpal tunnel morphology plays an essential role in the etiology and treatment of carpal tunnel syndrome. The purpose of this study was to observe the morphological changes of the carpal tunnel as a result of carpal arch width narrowing. It was hypothesized that carpal arch width narrowing would result in increased height and area of the carpal arch.
METHODS: The carpal arch width of eight cadaveric hands was narrowed by a custom apparatus and cross-sectional ultrasound images were acquired. The carpal arch height and area were quantified as the carpal arch width was narrowed. Correlation and regression analyses were performed for the carpal arch height and area with respect to the carpal arch width.
FINDINGS: The carpal tunnel became more convex as the carpal arch width was narrowed. The initial carpal arch width, height, and area were 25.7 (SD1.9) mm, 4.1 (SD0.6) mm, and 68.5 (SD14.0) mm(2), respectively. The carpal arch height and area negatively correlated with the carpal arch width, with correlation coefficients of -0.974 (SD0.018) and -0.925 (SD0.034), respectively. Linear regression analyses showed a 1mm narrowing of the carpal arch width resulted in proportional increases of 0.40 (SD0.14) mm in the carpal arch height and 4.0 (SD2.2) mm(2) in the carpal arch area.
INTERPRETATION: This study demonstrates that carpal arch width narrowing leads to increased carpal arch height and area, a potential mechanism to reduce the mechanical insult to the median nerve and relieve symptoms associated with carpal tunnel syndrome.
Authors:
Zong-Ming Li; Joseph N Gabra; Tamara L Marquardt; Dong Hee Kim
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2013-04-09
Journal Detail:
Title:  Clinical biomechanics (Bristol, Avon)     Volume:  28     ISSN:  1879-1271     ISO Abbreviation:  Clin Biomech (Bristol, Avon)     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-05-30     Completed Date:  2014-02-20     Revised Date:  2014-04-10    
Medline Journal Info:
Nlm Unique ID:  8611877     Medline TA:  Clin Biomech (Bristol, Avon)     Country:  England    
Other Details:
Languages:  eng     Pagination:  402-7     Citation Subset:  IM    
Copyright Information:
Copyright © 2013 Elsevier Ltd. All rights reserved.
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MeSH Terms
Descriptor/Qualifier:
Cadaver
Carpal Bones / ultrasonography*
Carpal Tunnel Syndrome / ultrasonography*
Female
Humans
Male
Median Nerve / ultrasonography
Middle Aged
Grant Support
ID/Acronym/Agency:
R21 AR062753/AR/NIAMS NIH HHS; R21AR062753/AR/NIAMS NIH HHS
Comments/Corrections

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