Document Detail

Relation of wrist angles to median nerve conduction studies.
MedLine Citation:
PMID:  19610546     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To measure the changes in median nerve conduction parameters at various angles of wrist flexion and extension. DESIGN: We studied 8 patients with carpal tunnel syndrome (CTS) and 4 subjects (5 hands) without the condition (controls). Conduction parameters were measured with the wrist in neutral position and at different wrist angles. RESULTS: Onset motor latency increased in both groups with wrist extension and decreased with wrist flexion. Sensory onset latency decreased in both groups with wrist flexion. Compound Muscle Action Potential (CMAP) amplitude increased with wrist flexion for both groups. Wrist extension resulted in reduction of the CMAP amplitude in controls; however, for the CTS group it increased for the first 30 degrees and then decreased. Sensory Nerve Action Potential (SNAP) amplitude increased with wrist flexion and decreased with wrist extension in both groups. CONCLUSION: Median nerve conduction parameters improve with wrist flexion and generally worsen with extension.
Ramon L Cuevas-Trisan; Aileen G Ojeda-Rodriguez
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Boletín de la Asociación Médica de Puerto Rico     Volume:  98     ISSN:  0004-4849     ISO Abbreviation:  Bol Asoc Med P R     Publication Date:    2006 Jan-Mar
Date Detail:
Created Date:  2009-07-20     Completed Date:  2009-08-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7505267     Medline TA:  Bol Asoc Med P R     Country:  Puerto Rico    
Other Details:
Languages:  eng     Pagination:  17-23     Citation Subset:  IM    
Physical Medicine & Rehabilitation Service, Veterans Affairs Medical and Regional Office Center Program, San Juan, Puerto Rico.
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MeSH Terms
Carpal Tunnel Syndrome / physiopathology*,  therapy*
Median Nerve / physiology*
Middle Aged
Neural Conduction*
Orthotic Devices
Wrist* / physiology

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

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