Clinical validity of two different grading systems for lumbar central canal stenosis: Schizas and Lee classification systems

Yeon Jee Ko, Eugene Lee, Joon Woo Lee, Chi Young Park, Jungheum Cho, Yusuhn Kang, Joong Mo Ahn

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Objective To assess the learnability of two magnetic resonance imaging (MRI) grading systems for lumbar central canal stenosis based on inter-observer agreement and test-retest reliability of doctors with no prior knowledge of the two systems. Materials and methods Two clinical fellows, one novice radiology resident, one neurosurgeon, and one orthopedic surgeon, who were unaware of the two qualitative MRI grading systems prior to this study, acquainted themselves with the teaching files. All five observers independently assessed the LCCS grade of 70 patients using T2-weighted axial magnetic resonance images at the L2-3, L3-4, L3-4, and L5-S1 disc levels. Analysis was performed twice at an interval of two months. Results The inter-observer agreement among all five readers was excellent and test-retest reliability was moderate to excellent for both the Schizas and Lee systems. Positive percentage agreements were found to be over 0.8 in almost all observers with relatively narrow 95% confidence limits. Conclusion Both Schizas and Lee MRI grading systems for LCCS are reliable grading systems, and can be used as a learnable method for both clinicians and radiologists.

Original languageEnglish
Article numbere0233633
JournalPLoS ONE
Volume15
Issue number5
DOIs
StatePublished - 1 May 2020

Fingerprint Dive into the research topics of 'Clinical validity of two different grading systems for lumbar central canal stenosis: Schizas and Lee classification systems'. Together they form a unique fingerprint.

Cite this