Abstract
Objectives:To compare the reliability of two recently reported MR grading systems of cervical neural foraminal stenosis (CNFS) and their correlation with clinical manifestations.Methods:We evaluated 188 patients (M:F = 80:108, mean age of 41 years) who visited our institution and underwent oblique sagittal MR imaging of the cervical spine. Two radiologists evaluated the MRI findings for the presence and grade of CNFS at the narrowest point, with the grading systems (Park, Kim and mKim systems) suggested by Park et al. and Kim et al. More than one positive neurologic sign and more than one neurologic clinical symptom was considered a positive neurologic manifestation (PNM) of each foraminal stenosis. Inter-observer agreement between two readers was analyzed using kappa statistics. Nonparametric correlation analysis (Spearman’s correlation) was used to evaluate correlation coefficients (R) to assess the relationship between CNFS grade and clinical manifestations.Results:Both the Park and mKim systems demons...

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