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Comparison of Inching Electrodiagnosis Method and Ultrasonographic Findings in the Determination of Median Nerve Entrapment Site in Carpal Tunnel Syndrome

AZADEH A; VASAGHI A; JALLI R; EMAD M
AM J PHYS MED REHABIL , 2017, vol. 96, n° 12, p. 869-873
Doc n°: 186219
Localisation : Documentation IRR

D.O.I. : http://dx.doi.org/DOI:10.1097/PHM.0000000000000762
Descripteurs : AC232 - ATTEINTES DES NERFS RACHIDIENS

The purpose of the study was to evaluate the diagnostic value of both
inching method through the electrodiagnostic test and ultrasonographic assay in
localizing the site of entrapment in patients with symptoms and signs of carpal
tunnel syndrome. DESIGN: Thirty-two hands with confirmed carpal tunnel syndrome
through electrodiagnostic test and 30 hands as control group were enrolled. For
both groups, sensory and motor latencies by inching technique and cross-sectional
area by ultrasonography were measured at the inching points. The statistical
analysis was performed by SPSS software, and mean difference with 95% confidence
interval was calculated. RESULTS: Mean of sensory peak latency with inching
method and cross-sectional area by the ultrasonography was greater in case group
compared with the control group (P < 0.05). We revealed a significant difference
of antidromic sensory latency between two adjacent points belonging to the fifth
and sixth segments. In orthodromic sensory and distal motor latency the sixth
segment had statistically significant latency difference. Sixth and seventh
points had the greatest cross-sectional area. Distal motor latency difference and
cross-sectional area had the greatest sensitivity at the seventh point.
CONCLUSIONS: In this study, we revealed the most sites of entrapment of the
median nerve through carpal tunnel are 2- and 3-cm distal to the distal wrist
crease.

Langue : ANGLAIS

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