Diagnostic value of Phalen's test and Nerve Conduction Velocity in Carpal Tunnel Syndrome

AUTHORS

Ahmadagha Negahi 1 , * , Arash Rahimi 2

1 Assistant Professor Department of Internal Medicineو Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

2 General Practitioner, Hormozgan University of Medical Sciences, Bandar Abbas, Iran.

How to Cite: Negahi A, Rahimi A. Diagnostic value of Phalen's test and Nerve Conduction Velocity in Carpal Tunnel Syndrome, Hormozgan Med J. 2007 ; 11(2):e89354.

ARTICLE INFORMATION

Hormozgan Medical Journal: 11 (2); e89354
Published Online: February 19, 2007
Article Type: Research Article
Received: April 21, 2004
Accepted: February 19, 2007

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Abstract

Introduction: Carpal tunnel syndrome (CTS) is a prevalent disorder in women 30 to
60 years old, which is due to compression of median nerve in hand wrist tunnel. As
this syndrome is prevalent, diagnostic power of clinical tests are undefined and
electrodiagnostic tests are not accessible widely. This study was conducted to
determine the diagnostic power of Phalen's test in comparison with NCV.
Methods: 93 patients (overall 97 hands) entered this case-control study. The
Phalen's test was performed for all the patients, then definite diagnosis was made by
electrodiagnostic tests, and diagnostic power Phalen's test was defined. Data were
analysed using Chi-square statistical test by Minitab software.
Results: 75 (7502%) of participants were female. Mean age of patients group was
39.1 years old and mean age of control group was 39.4% years old. The sensitivity
of Phalen's test was 85.3% and its specifity was 88.5%. Tinel's test was studied
too, that its sensitivity and specifity were 57% and 68%, respectively.
Conclusion: This study shows that positive clinical tests approve the diagnosis of
CTS, and as note to results of Phalen's test, negative test is valuable too, but
negative Tinel's test can not rule out CTS. So, the Phalen's test is valuable to rule
out or rule in the diagnosis of CTS but we can not rely on it for certain diagnosis of
CTS and for definite diagnosis, electrodiagnostic test are recommended.

Keywords

Carpal Tunnel Syndrome – Neural Conduction - Electro diagnosis

© 2007, Hormozgan Medical Journal. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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