Correlation between Ultrasonography Findings and Electrodiagnostic Severity in Carpal Tunnel Syndrome: 3D Ultrasonography.
10.3988/jcn.2014.10.4.348
- Author:
Hee Kyu KWON
1
;
Hyo Jung KANG
;
Chan Woo BYUN
;
Joon Shik YOON
;
Chang Ho KANG
;
Sung Bum PYUN
Author Information
1. Department of Physical Medicine & Rehabilitation, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.
- Publication Type:Original Article
- Keywords:
three-dimensional ultrasonography;
carpal tunnel syndrome;
cross-sectional area;
electrophysiological severity;
median nerve
- MeSH:
Bays;
Carpal Tunnel Syndrome*;
Humans;
Median Nerve;
Prospective Studies;
Ultrasonography*;
Wrist
- From:Journal of Clinical Neurology
2014;10(4):348-353
- CountryRepublic of Korea
- Language:English
-
Abstract:
BACKGROUND AND PURPOSE: To determine the correlation between the cross-sectional area (CSA) of the median nerve measured at the wrist using three-dimensional (3D) ultrasonography (US) and the electrophysiological severity of carpal tunnel syndrome (CTS). METHODS: We prospectively examined 102 wrists of 51 patients with clinical CTS, which were classified into 3 groups according to the electrodiagnostic (EDX) findings. Median nerve CSAs were measured using 3D US at the carpal tunnel inlet and at the level of maximal swelling. RESULTS: Ten wrists were negative for CTS. Of the 92 CTS-positive wrists, 23, 30, and 39 were classified as having mild, moderate, and severe CTS, respectively. The median nerve CSA differed significantly between the severe- and moderate-CTS groups (p=0.0007 at the carpal tunnel inlet and p<0.0001 at the maximal swelling site). There was a correlation between median nerve CSA and EDX parameters among those wrists with severe and mild CTS (p<0.0001 at both sites). CONCLUSIONS: The median nerve CSA as measured by 3D US could provide additional information about the severity of CTS, as indicated by the strong correlation with standard EDX findings.
