Investigation of the Diagnostic Value of Ultrasonography for Radial Neuropathy Located at the Spiral Groove.
10.5535/arm.2018.42.4.601
- Author:
Seojin SONG
1
;
Yeonji YOO
;
Sun Jae WON
;
Hye Jung PARK
;
Won Ihl RHEE
Author Information
1. Department of Rehabilitation Medicine, Yeouido St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. gstinfog@catholic.ac.kr
- Publication Type:Original Article
- Keywords:
Radial neuropathy;
Diagnostic imaging
- MeSH:
Diagnostic Imaging;
Humans;
Pathology;
Radial Nerve;
Radial Neuropathy*;
Reference Values;
ROC Curve;
Sensitivity and Specificity;
Ultrasonography*
- From:Annals of Rehabilitation Medicine
2018;42(4):601-608
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: To determine a diagnostic cut-off value for the cross-sectional area (CSA) of the radial nerve using ultrasonography for radial neuropathy located at the spiral groove (SG). METHODS: Seventeen patients with electrodiagnostic evidence of radial neuropathy at the SG and 30 healthy controls underwent ultrasonography of the radial nerve at the SG . The CSAs at the SG were compared in the patient and control groups. The CSA at the SG between the symptomatic and asymptomatic sides (ΔSx–Asx and Sx/Asx, respectively) were analyzed to obtain the optimal cut-off value. The relationship between the electrophysiological severity of radial neuropathy and CSA was also evaluated. RESULTS: Among the variables examined, there were statistically significant differences in the CSA between the patient and control groups, ΔSx–Asx, and Sx/Asx at the SG. In a receiver operating characteristics analysis, the cut-off CSA was 5.75 mm² at the SG (sensitivity 52.9%, specificity 90%), 1.75 mm² for ΔSx–Asx (sensitivity 58.8%, specificity 100%), and 1.22 mm² for Sx/Asx (sensitivity 70.6%, specificity 93.3%) in diagnosing radial neuropathy at the SG. There was no significant correlation between CSA and electrophysiological severity score for either patient group. CONCLUSION: The reference value obtained for CSA of the radial nerve at the SG may facilitate investigation of radial nerve pathologies at the SG.
