Document Detail

Pressure-morphology relationship of a released carpal tunnel.
MedLine Citation:
PMID:  23184493     Owner:  NLM     Status:  MEDLINE    
We investigated morphological changes of a released carpal tunnel in response to variations of carpal tunnel pressure. Pressure within the carpal tunnel is known to be elevated in patients with carpal tunnel syndrome and dependent on wrist posture. Previously, increased carpal tunnel pressure was shown to affect the morphology of the carpal tunnel with an intact transverse carpal ligament (TCL). However, the pressure-morphology relationship of the carpal tunnel after release of the TCL has not been investigated. Carpal tunnel release (CTR) was performed endoscopically on cadaveric hands and the carpal tunnel pressure was dynamically increased from 10 to 120 mmHg. Simultaneously, carpal tunnel cross-sectional images were captured by an ultrasound system, and pressure measurements were recorded by a pressure transducer. Carpal tunnel pressure significantly affected carpal arch area (p < 0.001), with an increase of >62 mm(2) at 120 mmHg. Carpal arch height, length, and width also significantly changed with carpal tunnel pressure (p < 0.05). As carpal tunnel pressure increased, carpal arch height and length increased, but the carpal arch width decreased. Analyses of the pressure-morphology relationship for a released carpal tunnel revealed a nine times greater compliance than that previously reported for a carpal tunnel with an intact TCL. This change of structural properties as a result of transecting the TCL helps explain the reduction of carpal tunnel pressure and relief of symptoms for patients after CTR surgery.
Dong Hee Kim; Tamara L Marquardt; Joseph N Gabra; Zhilei Liu Shen; Peter J Evans; William H Seitz; Zong-Ming Li
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-11-26
Journal Detail:
Title:  Journal of orthopaedic research : official publication of the Orthopaedic Research Society     Volume:  31     ISSN:  1554-527X     ISO Abbreviation:  J. Orthop. Res.     Publication Date:  2013 Apr 
Date Detail:
Created Date:  2013-02-28     Completed Date:  2013-04-17     Revised Date:  2013-12-04    
Medline Journal Info:
Nlm Unique ID:  8404726     Medline TA:  J Orthop Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  616-20     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Orthopaedic Research Society.
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MeSH Terms
Carpal Bones / pathology*,  ultrasonography
Carpal Tunnel Syndrome / pathology*,  physiopathology,  surgery
Ligaments, Articular / pathology,  surgery
Middle Aged
Grant Support

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

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