ArticleActa ortopedica brasileira2018
RELIABILITY OF THE MICHIGAN STATE UNIVERSITY (MSU) CLASSIFICATION OF LUMBAR DISC HERNIATION.
Article in Acta ortopedica brasileira, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- MRI grading of lumbar disc herniation based on AFFM-YOLOv8 system.Scientific reports · 2025Article
- Unravelling lumbar disc herniation severity beyond MRI : integrated transcriptomic and metabolomic analyses highlight glycerophospholipid metabolism and inform a machine-learning diagnostic model: a pilot study.Bone & joint research · 2025Article
- Surgical Strategy for Lumbar Disc Herniation based on the MSU Classification: Percutaneous Endoscopic Lumbar Discectomy versus Transforaminal Lumbar Interbody Fusion: A 5-year Retrospective Study.Orthopaedic surgery · 2024Article
- A fully automatic MRI-guided decision support system for lumbar disc herniation using machine learning.JOR spine · 2024Article
- Deep learning-based detection and classification of lumbar disc herniation on magnetic resonance images.JOR spine · 2023Article
- MRI-Based Medical Image Recognition: Identification and Diagnosis of LDH.Computational intelligence and neuroscience · 2022Article
- Automatic Grading of Disc Herniation, Central Canal Stenosis and Nerve Roots Compression in Lumbar Magnetic Resonance Image Diagnosis.Frontiers in endocrinology · 2022Article
- Spontaneous Total Resolution of Severe Lumbar Disc Herniation.Chonnam medical journal · 2020Article
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe Michigan State University (MSU) classification of lumbar disc herniation (LDH) is periodically used by various authors to classify disc herniation. We assessed the reliability of this classification system among orthopedic residents at our institute.
methodsFifty T2 axial-cut magnetic resonance images (MRI) corresponding to the level of maximal disc herniation from patients diagnosed with a single LDH were selected and distributed to six orthopedic residents. All six residents gave a specific rating for each image based on the MSU classification; in addition, three residents gave ratings on two different occasions. The degree of agreement among residents was analyzed by calculating inter-observer and intra-observer reliability using the Kappa statistic.
resultsThe inter-observer reliability among the six residents calculated as the Fleiss' Kappa was 0.422, which indicates moderate reliability. The intra-observer reliability of three selected residents calculated by Cohen's Kappa was 0.750, 0.772, and 0.859, which indicates substantial to almost perfect reliability. Variations in ratings were frequent in images portraying a broad-based disc herniation with spinal canal stenosis.
conclusionOur findings demonstrate moderate homogeneity of ratings given by residents; however, test-retest results proved the ratings to be consistent.
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