Inter- and Intraexaminer Reliability in Identifying and Classifying Degenerative Marrow (Modic) Changes on Lumbar Spine Magnetic Resonance Scans

The Modic classification system shows moderate to almost perfect inter- and intraexaminer reliability in this study, simulating the methods of diagnosis used in clinical/radiological practice. The results of studies using the Modic system before investigations of its reliability can be viewed with more confidence, and future studies can continue to evaluate the link with patient symptoms and treatment outcomes.